{"id":67019,"date":"2026-09-14T08:00:40","date_gmt":"2026-09-13T23:00:40","guid":{"rendered":"https:\/\/norimen.net\/?p=67019"},"modified":"2026-09-13T23:16:47","modified_gmt":"2026-09-13T14:16:47","slug":"japan-construction-trades-oo-ya-complete-list","status":"publish","type":"post","link":"https:\/\/norimen.net\/en\/japan-construction-trades-oo-ya-full-list\/","title":{"rendered":"I Listed All of Japan's \"\u25cb\u25cb-ya\" Businesses | Differences in Specialization Between Japan and Overseas, as Seen by Slope Construction and Reinforcing Steel Contractors"},"content":{"rendered":"<p>Hello, everyone.<\/p>\n<p>This is Enta.<\/p>\n<p>In my last post, I wrote a brief article introducing \u201c\u25cb\u25cb-ya,\u201d but I received comments saying, \u201cI want to know more about everything\u201d and \u201cDon\u2019t skip over the international parts.\u201d<\/p>\n<p>You're absolutely right. If you just pick out a few random parts, people will end up wondering, \"Why is this included, but that isn't?\" lol<\/p>\n<p>But that's beside the point.<\/p>\n<p>So, in this post, I\u2019ll list all of Japan\u2019s \u201c\u25cb\u25cb-ya\u201d businesses by category, without skipping any of the details I covered last time.<\/p>\n<p>I'll also include the full comparison table with international data. It's going to be a pretty long post, but just think of it as some fun trivia lol.<\/p>\n<h2>First, regarding the evaluation criteria (meaning of \u25cf, \u25cb, and \u25b3)<\/h2>\n<p>Before listing a large number of \u201c\u25cb\u25cb-ya\u201d stores, I\u2019ll explain the criteria for evaluation.<\/p>\n<p>Since \u201c\u25cb\u25cb-ya\u201d is not an official legal name but rather a colloquial term used in the field, it\u2019s not possible to say with absolute certainty that \u201cthis is the official name\u201d in all cases.<\/p>\n<p>So, in this article, I\u2019ve organized the information into the following three steps.<\/p>\n<ul>\n<li><strong>\u25cf<\/strong>= Cases where examples of the actual use of the term \u201c\u25cb\u25cb-ya\u201d were confirmed on the websites of specialized businesses themselves or in industry materials<\/li>\n<li><strong>\u25cb<\/strong>= These exist as specialized professions or specialized construction trades, but it has not been confirmed whether the term \u201c\u25cb\u25cb-ya\u201d is used uniformly nationwide (it varies by region and worksite).<\/li>\n<li><strong>\u25b3<\/strong>= Jobs that actually exist, but for which the term \u201c\u25cb\u25cb-ya\u201d is not widely used<\/li>\n<\/ul>\n<p>In other words, even in the case of \u25cf, this simply means that \u201cthere are instances where it is referred to that way\u201d\u2014it does not imply that it is an official name established by law or by a public agency.<\/p>\n<p>Just to be clear on this point.<\/p>\n<p>The official names of the civil engineering and architectural sectors are listed among the 29 sectors defined in the Construction Industry Act, as well as<\/p>\n<p>Please refer to the competency assessment categories of the Ministry of Land, Infrastructure, Transport and Tourism\u2019s Construction Career Up System (CCUS) (where rebar, formwork, grouting, foundation piles, slope disaster prevention, and road slope protection, among others, are designated as independent categories).<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2017\/10\/3db8f665bfc2aff7f8fd869778648f86-1024x650.jpg\" alt=\"An image of workers holding a meeting at the job site\" \/><\/p>\n<h2>A Comprehensive List of Japan's \"\u25cb\u25cb-ya\" Shops<\/h2>\n<p>I'm going to list everything by category starting here. It's a long list. Brace yourself lol.<\/p>\n<p>After all, I had the AI search the internet and spent a while thinking about it! LOL<\/p>\n<h3>1. Earthwork, Foundations, and Soil Mechanics<\/h3>\n<p>*Note: Some of these are in the same field, but I'll just post them as I found them for now.<\/p>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<th>Main Responsibilities<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Civil Engineer<\/td>\n<td>\u25cf<\/td>\n<td>Civil Engineering Contractor<\/td>\n<td>General Civil Engineering<\/td>\n<\/tr>\n<tr>\n<td>Earthwork Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Earthwork<\/td>\n<td>Excavation, Floor Excavation, Backfilling<\/td>\n<\/tr>\n<tr>\n<td>Heavy Equipment Dealer<\/td>\n<td>\u25cb<\/td>\n<td>Mechanical Earthworks<\/td>\n<td>BH, Bull, Heavy Equipment Construction<\/td>\n<\/tr>\n<tr>\n<td>Surgeon<\/td>\n<td>\u25cb<\/td>\n<td>Construction Equipment Operator<\/td>\n<td>Heavy Equipment Operator<\/td>\n<\/tr>\n<tr>\n<td>Foundation Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Foundation Engineering<\/td>\n<td>Fundamentals of Architecture and Structures<\/td>\n<\/tr>\n<tr>\n<td>Kugiya<\/td>\n<td>\u25cf<\/td>\n<td>Foundation Piling<\/td>\n<td>On-site driven piles, precast piles, etc.<\/td>\n<\/tr>\n<tr>\n<td>Pile Driver<\/td>\n<td>\u25cb<\/td>\n<td>Pile Driver<\/td>\n<td>Pile Driving<\/td>\n<\/tr>\n<tr>\n<td>Press-Fit Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Press-in Worker<\/td>\n<td>Press-in Steel Sheet Piles and Steel Pipe Piles<\/td>\n<\/tr>\n<tr>\n<td>Yamadoriya<\/td>\n<td>\u25cb<\/td>\n<td>Retaining Wall Construction<\/td>\n<td>Retaining walls, cut beams, etc.<\/td>\n<\/tr>\n<tr>\n<td>Fukasoko-ya<\/td>\n<td>\u25cb<\/td>\n<td>Deep Foundation Work<\/td>\n<td>Deep-foundation piles<\/td>\n<\/tr>\n<tr>\n<td>Ground Improvement Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Soil Improvement Worker<\/td>\n<td>Deep- and Shallow-Layer Mixed Treatment, etc.<\/td>\n<\/tr>\n<tr>\n<td>Medicine Dispenser<\/td>\n<td>\u25cb<\/td>\n<td>Chemical Injection Technician<\/td>\n<td>Groundwater Sealing and Soil Stabilization<\/td>\n<\/tr>\n<tr>\n<td>Injection Specialist<\/td>\n<td>\u25cf<\/td>\n<td>Grout Worker<\/td>\n<td>Chemical and Cement Injection<\/td>\n<\/tr>\n<tr>\n<td>Grout Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Grout Worker<\/td>\n<td>Soil and Rock Grouting<\/td>\n<\/tr>\n<tr>\n<td>Jet Shop<\/td>\n<td>\u25cb<\/td>\n<td>Jet Grouting Technician<\/td>\n<td>High-Pressure Jet Agitation<\/td>\n<\/tr>\n<tr>\n<td>Rock Grouting Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Rock Grouting Work<\/td>\n<td>Bedrock Improvement for Dams and Other Structures<\/td>\n<\/tr>\n<tr>\n<td>Bowling Alley<\/td>\n<td>\u25cb<\/td>\n<td>Drilling Worker<\/td>\n<td>Drilling, Surveying, and Construction<\/td>\n<\/tr>\n<tr>\n<td>Well Driller<\/td>\n<td>\u25cf<\/td>\n<td>Well Drilling<\/td>\n<td>Well Drilling<\/td>\n<\/tr>\n<tr>\n<td>Ido-ya<\/td>\n<td>\u25cf<\/td>\n<td>Well Drilling<\/td>\n<td>Well Construction<\/td>\n<\/tr>\n<tr>\n<td>Well Point Shop<\/td>\n<td>\u25cb<\/td>\n<td>Wellpoint Construction<\/td>\n<td>Decline in Groundwater Levels<\/td>\n<\/tr>\n<tr>\n<td>Geological Surveyor<\/td>\n<td>\u25cf<\/td>\n<td>Geological Survey<\/td>\n<td>Boring Survey<\/td>\n<\/tr>\n<tr>\n<td>Soil Testing Firm<\/td>\n<td>\u25cb<\/td>\n<td>Soil Testing<\/td>\n<td>Density, Particle Size, and Strength Tests<\/td>\n<\/tr>\n<tr>\n<td>Excavated Soil Disposal Company<\/td>\n<td>\u25cf<\/td>\n<td>Construction Soil Disposal<\/td>\n<td>Receipt and Transportation of Excavated Soil<\/td>\n<\/tr>\n<tr>\n<td>Dump Truck Company<\/td>\n<td>\u25cb<\/td>\n<td>Earthwork Transportation<\/td>\n<td>Transportation of Soil and Crushed Stone<\/td>\n<\/tr>\n<tr>\n<td>Industrial Waste Company<\/td>\n<td>\u25cf<\/td>\n<td>Industrial Waste Treatment<\/td>\n<td>Construction Waste Disposal<\/td>\n<\/tr>\n<tr>\n<td>Blasting Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Blasting Technician<\/td>\n<td>Rock Blasting<\/td>\n<\/tr>\n<tr>\n<td>Crusher<\/td>\n<td>\u25cb<\/td>\n<td>Crusher Operator<\/td>\n<td>Rock and Structural Breaching<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>As for \u201cinjection services,\u201d there was actually a case where a company specializing in chemical injections used the term \u201cEmergency Injection Service List\u201d itself lol.<\/p>\n<p>Just looking at the number of issues with the ground and foundation alone, I\u2019m already worried about what\u2019s to come, lol.<\/p>\n<h3>2. Slope and Embankment Disaster Prevention (Our Core Business)<\/h3>\n<p>Since this is my day job, I\u2019m writing this with a lot of passion.<\/p>\n<table style=\"width: 38.9887%; height: 456px;\">\n<thead>\n<tr style=\"height: 24px;\">\n<th style=\"height: 24px;\">How to Address Someone<\/th>\n<th style=\"height: 24px;\">Ruling<\/th>\n<th style=\"height: 24px;\">Official\/Related Job Titles<\/th>\n<th style=\"height: 24px;\">Main Responsibilities<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Slope Construction Specialist<\/td>\n<td style=\"height: 24px;\">\u25cf<\/td>\n<td style=\"height: 24px;\">Slope Protection Structures for Roads, etc.<\/td>\n<td style=\"height: 24px;\">General Slope Construction<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Slope Specialist<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Slope Disaster Prevention<\/td>\n<td style=\"height: 24px;\">Slope Stabilization Measures<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Slope Disaster Prevention Specialist<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Slope Disaster Prevention<\/td>\n<td style=\"height: 24px;\">Measures to Prevent Landslides and Rockfalls<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Anchor Shop<\/td>\n<td style=\"height: 24px;\">\u25cf<\/td>\n<td style=\"height: 24px;\">Anchor Worker<\/td>\n<td style=\"height: 24px;\">Ground Anchor<\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"height: 48px;\">Spray Painting Company<\/td>\n<td style=\"height: 48px;\">\u25cf<\/td>\n<td style=\"height: 48px;\">Mortar and Concrete Spraying Worker<\/td>\n<td style=\"height: 48px;\">Slope Spraying<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Law Firm<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Spray-Applied Formwork<\/td>\n<td style=\"height: 24px;\">Legal Framework Implementation<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Las House<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Plasterer (Specialized)<\/td>\n<td style=\"height: 24px;\">Wire Mesh Installation<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Landscape Gardener<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Landscape Engineer<\/td>\n<td style=\"height: 24px;\">Slope Greening<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Landscape Contractor<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Slope Greening Specialist<\/td>\n<td style=\"height: 24px;\">Seeds, Growing Media, and Mats<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Tanegafukiya<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Seed Sprayer<\/td>\n<td style=\"height: 24px;\">Seed Sowing<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Thick-Layer Substrate Specialist<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Vegetation Substrate Spraying Technician<\/td>\n<td style=\"height: 24px;\">Thick-Layer Substrate Spraying<\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"height: 48px;\">Rock Bolt Contractor<\/td>\n<td style=\"height: 48px;\">\u25cb<\/td>\n<td style=\"height: 48px;\">Reinforcing Bar Installer<\/td>\n<td style=\"height: 48px;\">Reinforced Soil and Rebar Installation<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Reinforcing Bar Installer<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Reinforcing Bar Installer<\/td>\n<td style=\"height: 24px;\">Rock Bolt Installation<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Rockfall Prevention Specialist<\/td>\n<td style=\"height: 24px;\">\u25cb<\/td>\n<td style=\"height: 24px;\">Rockfall Protection Structures<\/td>\n<td style=\"height: 24px;\">Nets, Fences, and Preventive Measures<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Internet Cafe<\/td>\n<td style=\"height: 24px;\">\u25b3<\/td>\n<td style=\"height: 24px;\">Rope Net Worker<\/td>\n<td style=\"height: 24px;\">Work on Steep Slopes at Height<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\">Specialized Tree Removal Service<\/td>\n<td style=\"height: 24px;\">\u25cf<\/td>\n<td style=\"height: 24px;\">Specialized Tree Removal<\/td>\n<td style=\"height: 24px;\">Tall Trees \u00b7 Logging on Steep Slopes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\"Slope Contractors\" and \"Spray Coaters\" are terms used by slope-specialized companies themselves when introducing their businesses.<\/p>\n<p>It should be noted that the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has divided the field previously grouped under the broad category of \u201cslope contractors\u201d into two separate categories for the purposes of CCUS capability assessment: \u201cslope disaster prevention\u201d and \u201cslope protection work for roads and other structures.\u201d<\/p>\n<p>I guess even the traditional, large-scale \u201cslope contractors\u201d are gradually becoming more specialized under the current system, huh...<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-42761\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/09\/DSC_0406.jpg\" alt=\"Slope Collapse\" width=\"600\" height=\"337\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/09\/DSC_0406.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/09\/DSC_0406-300x169.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h3>3. Concrete and Structural Framework<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Reinforcement Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Reinforcing Steel Worker<\/td>\n<\/tr>\n<tr>\n<td>Press-fit Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Reinforcing Bar Welder<\/td>\n<\/tr>\n<tr>\n<td>Formwork Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Formwork Worker \/ Formwork Carpenter<\/td>\n<\/tr>\n<tr>\n<td>Scrap Dealer<\/td>\n<td>\u25cb<\/td>\n<td>Formwork Demolition Worker<\/td>\n<\/tr>\n<tr>\n<td>Formwork Dismantling Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Formwork Removal<\/td>\n<\/tr>\n<tr>\n<td>Ready-mix concrete company<\/td>\n<td>\u25cf<\/td>\n<td>Ready-Mix Concrete Production and Delivery<\/td>\n<\/tr>\n<tr>\n<td>Pump Shop<\/td>\n<td>\u25cf<\/td>\n<td>Concrete Pump Operator<\/td>\n<\/tr>\n<tr>\n<td>Pump Truck Driver<\/td>\n<td>\u25cf<\/td>\n<td>Concrete Pump Operator<\/td>\n<\/tr>\n<tr>\n<td>Doma-ya<\/td>\n<td>\u25cf<\/td>\n<td>Concrete Floor Finisher<\/td>\n<\/tr>\n<tr>\n<td>Plasterer<\/td>\n<td>\u25cf<\/td>\n<td>Plastering<\/td>\n<\/tr>\n<tr>\n<td>Hatsuriya<\/td>\n<td>\u25cf<\/td>\n<td>Fishing Worker<\/td>\n<\/tr>\n<tr>\n<td>The Demolisher<\/td>\n<td>\u25cf<\/td>\n<td>Demolition and Chipping<\/td>\n<\/tr>\n<tr>\n<td>Cutter Shop<\/td>\n<td>\u25cf<\/td>\n<td>Cutting and Drilling Worker<\/td>\n<\/tr>\n<tr>\n<td>Core Shop<\/td>\n<td>\u25cf<\/td>\n<td>Diamond Core Drilling<\/td>\n<\/tr>\n<tr>\n<td>Anchor Shop<\/td>\n<td>\u25cf<\/td>\n<td>Retrofit Anchor Installation<\/td>\n<\/tr>\n<tr>\n<td>Repairman<\/td>\n<td>\u25cb<\/td>\n<td>Concrete Repair Worker<\/td>\n<\/tr>\n<tr>\n<td>Cross-Section Repair Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Cross-Section Repair Worker<\/td>\n<\/tr>\n<tr>\n<td>Crack Repair Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Resin Injection Technician<\/td>\n<\/tr>\n<tr>\n<td>Sticker Shop<\/td>\n<td>\u25cf<\/td>\n<td>Sealing Technician<\/td>\n<\/tr>\n<tr>\n<td>Grout Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Sealing and Joint Work<\/td>\n<\/tr>\n<tr>\n<td>Waterproofing Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Waterproofing Contractor<\/td>\n<\/tr>\n<tr>\n<td>Blast Shop<\/td>\n<td>\u25cb<\/td>\n<td>Blast Operator<\/td>\n<\/tr>\n<tr>\n<td>Carbon Fiber Shop<\/td>\n<td>\u25b3<\/td>\n<td>Continuous Fiber Reinforcement Worker<\/td>\n<\/tr>\n<tr>\n<td>Reinforcement Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Structural Reinforcement Worker<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\"Core Drilling Company\" and \"Cutting Company\" are terms used by companies that specialize in cutting and drilling, and \"Pump Company = Concrete Pumping Contractor\" is also a well-established term.<\/p>\n<p>We have confirmed examples where \u201cdoma-ya\u201d are described as highly independent professionals, with specialized companies themselves describing their work as specializing in concrete floor finishing.<\/p>\n<p>Although the term \u201canchor contractor\u201d is used here, it refers to \u201cretrofitted anchors\u201d (a method in which holes are drilled into a structure after construction to secure metal fittings) rather than ground anchors for slopes. This distinction can be confusing, so please be careful.<\/p>\n<h3>4. Steel Framing, Steel Structures, and Heavy Objects<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tobiya<\/td>\n<td>\u25cf<\/td>\n<td>Scaffolder<\/td>\n<\/tr>\n<tr>\n<td>Scaffolding Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Scaffold Jumping<\/td>\n<\/tr>\n<tr>\n<td>Steel Structure Rigger<\/td>\n<td>\u25cf<\/td>\n<td>Steel Frame Scaffolding<\/td>\n<\/tr>\n<tr>\n<td>Heavy-Lift Rigger<\/td>\n<td>\u25cf<\/td>\n<td>Weight Jump<\/td>\n<\/tr>\n<tr>\n<td>Weight Shop<\/td>\n<td>\u25cf<\/td>\n<td>Heavy-Lift Crane Operations and Heavy-Lift Installation<\/td>\n<\/tr>\n<tr>\n<td>Steel Frame Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Steel Fabricator<\/td>\n<\/tr>\n<tr>\n<td>Metalworking Shop<\/td>\n<td>\u25cf<\/td>\n<td>Metalworking<\/td>\n<\/tr>\n<tr>\n<td>Blacksmith<\/td>\n<td>\u25cf<\/td>\n<td>Blacksmith<\/td>\n<\/tr>\n<tr>\n<td>Welding Shop<\/td>\n<td>\u25cf<\/td>\n<td>Welder<\/td>\n<\/tr>\n<tr>\n<td>Metal Fabricator<\/td>\n<td>\u25cb<\/td>\n<td>Can Maker<\/td>\n<\/tr>\n<tr>\n<td>Stud Shop<\/td>\n<td>\u25cb<\/td>\n<td>Stud Welder<\/td>\n<\/tr>\n<tr>\n<td>Rivet Shop<\/td>\n<td>\u25b3<\/td>\n<td>Riveter<\/td>\n<\/tr>\n<tr>\n<td>Frame Builder<\/td>\n<td>\u25cb<\/td>\n<td>Steel Frame Erecting<\/td>\n<\/tr>\n<tr>\n<td>Crane Company<\/td>\n<td>\u25cb<\/td>\n<td>Crane Operation and Lifting<\/td>\n<\/tr>\n<tr>\n<td>Lifting Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Yo Heavy Industries<\/td>\n<\/tr>\n<tr>\n<td>Machinery Installer<\/td>\n<td>\u25cb<\/td>\n<td>Mechanical and Equipment Installation Technician<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>There are examples where specialized companies themselves explain that \u201cJ\u016bry\u014d-ya\u201d is \u201coften used as an alternative term for heavy-lift scaffolders,\u201d and there are also confirmed instances where specialized companies use \u201cSakabane-ya\u201d as their business name.<\/p>\n<p>As anyone in this industry knows, the field of construction work is further subdivided into categories such as scaffolding workers, steel frame workers, heavy-lift workers, and power line workers.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-67024\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/94dd90ce006c71e93fd89160fc988b4f.jpg\" alt=\"Three Trades: Reinforcement, Formwork, and Steel Framing\" width=\"600\" height=\"338\" \/><\/p>\n<h3>5. Roads, Pavement, and Traffic Safety<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Paving Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Paving Worker<\/td>\n<\/tr>\n<tr>\n<td>Asphalt Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Asphalt Paver<\/td>\n<\/tr>\n<tr>\n<td>Road Subgrade Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Subgrade Work<\/td>\n<\/tr>\n<tr>\n<td>Cutter Shop<\/td>\n<td>\u25cf<\/td>\n<td>Pavement Cutter<\/td>\n<\/tr>\n<tr>\n<td>Line Shop<\/td>\n<td>\u25cf<\/td>\n<td>Lane Marking and Road Surface Marking Work<\/td>\n<\/tr>\n<tr>\n<td>White Line Shop<\/td>\n<td>\u25cb<\/td>\n<td>Landscape Line Worker<\/td>\n<\/tr>\n<tr>\n<td>Sign Maker<\/td>\n<td>\u25cb<\/td>\n<td>Road Sign Installer<\/td>\n<\/tr>\n<tr>\n<td>Guardrail Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Guardrail Installer<\/td>\n<\/tr>\n<tr>\n<td>Fence Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Fence Installer<\/td>\n<\/tr>\n<tr>\n<td>Traffic Signal Technician<\/td>\n<td>\u25cb<\/td>\n<td>Traffic Signal Equipment Technician<\/td>\n<\/tr>\n<tr>\n<td>Lighting Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Street Lighting Installation Technician<\/td>\n<\/tr>\n<tr>\n<td>Bricklayer<\/td>\n<td>\u25cf<\/td>\n<td>Paving and Concrete Block Work<\/td>\n<\/tr>\n<tr>\n<td>Interlocking Paver Installer<\/td>\n<td>\u25cb<\/td>\n<td>Paving Block Worker<\/td>\n<\/tr>\n<tr>\n<td>Curbstone Contractor<\/td>\n<td>\u25b3<\/td>\n<td>Curbstone Worker<\/td>\n<\/tr>\n<tr>\n<td>Safety Equipment Company<\/td>\n<td>\u25cb<\/td>\n<td>Road Traffic Safety Facilities Construction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The term \"line-ya\" has particularly well-established usage examples; road marking contractors themselves refer to themselves as \"the town's line-ya,\" and examples can be found on official municipal websites where the representative of a contracting company is quoted as saying, \"We are line-ya.\"<\/p>\n<h3>6. Bridges<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hashiya<\/td>\n<td>\u25cf<\/td>\n<td>Bridge Engineer<\/td>\n<\/tr>\n<tr>\n<td>Bridge Builder<\/td>\n<td>\u25cb<\/td>\n<td>Bridge Engineer<\/td>\n<\/tr>\n<tr>\n<td>Steel Structure Rigger<\/td>\n<td>\u25cf<\/td>\n<td>Bridge Construction<\/td>\n<\/tr>\n<tr>\n<td>Scaffolder<\/td>\n<td>\u25cb<\/td>\n<td>Bridge Erector<\/td>\n<\/tr>\n<tr>\n<td>Computer Store<\/td>\n<td>\u25cb<\/td>\n<td>Prestressed Concrete Technician<\/td>\n<\/tr>\n<tr>\n<td>A Nervous Person<\/td>\n<td>\u25b3<\/td>\n<td>PC Prestressing Engineer<\/td>\n<\/tr>\n<tr>\n<td>Grout Contractor<\/td>\n<td>\u25cb<\/td>\n<td>PC Grout<\/td>\n<\/tr>\n<tr>\n<td>Support Specialist<\/td>\n<td>\u25cf<\/td>\n<td>Bridge Bearing Installer<\/td>\n<\/tr>\n<tr>\n<td>Expansion Joint Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Expansion Joint Installation<\/td>\n<\/tr>\n<tr>\n<td>Slab Builder<\/td>\n<td>\u25b3<\/td>\n<td>RC\/PC Slab Worker<\/td>\n<\/tr>\n<tr>\n<td>Bridge Deck Waterproofing Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Bridge Deck Waterproofing Work<\/td>\n<\/tr>\n<tr>\n<td>Bridge Painter<\/td>\n<td>\u25cb<\/td>\n<td>Bridge Painter<\/td>\n<\/tr>\n<tr>\n<td>Blast Shop<\/td>\n<td>\u25cb<\/td>\n<td>Surface Preparation<\/td>\n<\/tr>\n<tr>\n<td>Repairman<\/td>\n<td>\u25cb<\/td>\n<td>Bridge Repair<\/td>\n<\/tr>\n<tr>\n<td>Seismic Retrofit Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Seismic Retrofit of Bridges<\/td>\n<\/tr>\n<tr>\n<td>Jack Service<\/td>\n<td>\u25b3<\/td>\n<td>Jack-Up Installation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Examples of the term \"support specialist\" can be found on the Japan Society of Civil Engineers\u2019 website for engineers.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-67025\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/790a0bed481c8d0d0cded53ca6ee9eae.jpg\" alt=\"Classification Chart of Construction Industry Designations\" width=\"600\" height=\"338\" \/><\/p>\n<h3>7. Tunnel and Underground Construction<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tunnel Builder<\/td>\n<td>\u25cb<\/td>\n<td>Tunnel Worker<\/td>\n<\/tr>\n<tr>\n<td>NATM Shop<\/td>\n<td>\u25b3<\/td>\n<td>NATM Construction<\/td>\n<\/tr>\n<tr>\n<td>Shield Shop<\/td>\n<td>\u25cb<\/td>\n<td>Shield Construction Worker<\/td>\n<\/tr>\n<tr>\n<td>Promoter<\/td>\n<td>\u25cf<\/td>\n<td>Trenching Machine<\/td>\n<\/tr>\n<tr>\n<td>Shaft Builder<\/td>\n<td>\u25cb<\/td>\n<td>Shaft Worker<\/td>\n<\/tr>\n<tr>\n<td>Caisson Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Caisson Worker<\/td>\n<\/tr>\n<tr>\n<td>Submarine House<\/td>\n<td>\u25cb<\/td>\n<td>Caisson Worker<\/td>\n<\/tr>\n<tr>\n<td>Saku Iwaya<\/td>\n<td>\u25cb<\/td>\n<td>Saku Rock Engineering<\/td>\n<\/tr>\n<tr>\n<td>Blasting Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Blasting Technician<\/td>\n<\/tr>\n<tr>\n<td>Segment Specialist<\/td>\n<td>\u25b3<\/td>\n<td>Segment Assembly Worker<\/td>\n<\/tr>\n<tr>\n<td>Backroom Dealer<\/td>\n<td>\u25b3<\/td>\n<td>Backfill Injection Worker<\/td>\n<\/tr>\n<tr>\n<td>Injection Specialist<\/td>\n<td>\u25cf<\/td>\n<td>Grout Worker<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>There are examples where specialized companies themselves describe \u201cpile-driving contractors\u201d as \u201ca specialized type of construction business.\u201d<\/p>\n<h3>8. Rivers, Harbors, and the Ocean<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Port Worker<\/td>\n<td>\u25cb<\/td>\n<td>Port Civil Engineering<\/td>\n<\/tr>\n<tr>\n<td>Offshore Civil Engineer<\/td>\n<td>\u25cb<\/td>\n<td>Offshore Construction<\/td>\n<\/tr>\n<tr>\n<td>Dredging Company<\/td>\n<td>\u25cb<\/td>\n<td>Dredging Engineer<\/td>\n<\/tr>\n<tr>\n<td>Diving Shop<\/td>\n<td>\u25cb<\/td>\n<td>Diver<\/td>\n<\/tr>\n<tr>\n<td>Marine Crane Operator<\/td>\n<td>\u25cb<\/td>\n<td>Marine Cranes<\/td>\n<\/tr>\n<tr>\n<td>Caisson Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Caisson Construction<\/td>\n<\/tr>\n<tr>\n<td>Wave-Breaker Block Contractor<\/td>\n<td>\u25b3<\/td>\n<td>Wave-dissipating structure<\/td>\n<\/tr>\n<tr>\n<td>Rubble Dealer<\/td>\n<td>\u25b3<\/td>\n<td>Stone Mason<\/td>\n<\/tr>\n<tr>\n<td>Shore Protection Contractor<\/td>\n<td>\u25cb<\/td>\n<td>Shore Protection Works<\/td>\n<\/tr>\n<tr>\n<td>Suimon-ya<\/td>\n<td>\u25cb<\/td>\n<td>Sluice Gate Installer<\/td>\n<\/tr>\n<tr>\n<td>Pump Shop<\/td>\n<td>\u25cb<\/td>\n<td>Pump Equipment Technician<\/td>\n<\/tr>\n<tr>\n<td>Underwater Concrete Worker<\/td>\n<td>\u25b3<\/td>\n<td>Underwater Concrete Work<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>9. Water and Sewer Systems and Pipelines<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Plumber<\/td>\n<td>\u25cf<\/td>\n<td>Water Supply and Drainage \/ Waterworks Construction<\/td>\n<\/tr>\n<tr>\n<td>Plumber<\/td>\n<td>\u25cf<\/td>\n<td>Plumber<\/td>\n<\/tr>\n<tr>\n<td>Kanaya<\/td>\n<td>\u25cb<\/td>\n<td>Pipe Fitter<\/td>\n<\/tr>\n<tr>\n<td>Sewer Worker<\/td>\n<td>\u25cb<\/td>\n<td>Sewer Worker<\/td>\n<\/tr>\n<tr>\n<td>Pipe Fitter<\/td>\n<td>\u25cb<\/td>\n<td>Pipe Fitter<\/td>\n<\/tr>\n<tr>\n<td>Promoter<\/td>\n<td>\u25cf<\/td>\n<td>Trenching Machine<\/td>\n<\/tr>\n<tr>\n<td>Trench Digger<\/td>\n<td>\u25b3<\/td>\n<td>Open-Cut Pipeline Construction Worker<\/td>\n<\/tr>\n<tr>\n<td>Equipment Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Plumbing and Drainage System Technician<\/td>\n<\/tr>\n<tr>\n<td>Pump Shop<\/td>\n<td>\u25cb<\/td>\n<td>Pump Equipment Technician<\/td>\n<\/tr>\n<tr>\n<td>Valve Shop<\/td>\n<td>\u25cb<\/td>\n<td>Valve Installation Technician<\/td>\n<\/tr>\n<tr>\n<td>Sewage Treatment Tank Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Sewage Treatment Tank Installer<\/td>\n<\/tr>\n<tr>\n<td>Gas Company<\/td>\n<td>\u25cf<\/td>\n<td>Gas Pipe Fitter<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\"Plumber\" is recognized as a clear industry term used by water supply and drainage companies themselves.<\/p>\n<h3>10. Railroads<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Track Worker<\/td>\n<td>\u25cb<\/td>\n<td>Track Worker<\/td>\n<\/tr>\n<tr>\n<td>Track Maintenance Worker<\/td>\n<td>\u25cb<\/td>\n<td>Track Maintenance Worker<\/td>\n<\/tr>\n<tr>\n<td>Rail Worker<\/td>\n<td>\u25b3<\/td>\n<td>Track Worker<\/td>\n<\/tr>\n<tr>\n<td>Overhead Line Technician<\/td>\n<td>\u25cb<\/td>\n<td>Electric Train Line Technician<\/td>\n<\/tr>\n<tr>\n<td>Traffic Signal Technician<\/td>\n<td>\u25cb<\/td>\n<td>Railway Signal Technician<\/td>\n<\/tr>\n<tr>\n<td>Electronics Store<\/td>\n<td>\u25cf<\/td>\n<td>Railway Electrician<\/td>\n<\/tr>\n<tr>\n<td>Civil Engineer<\/td>\n<td>\u25cf<\/td>\n<td>Railway Civil Engineering<\/td>\n<\/tr>\n<tr>\n<td>Tunnel Builder<\/td>\n<td>\u25cb<\/td>\n<td>Railway Tunnel Engineer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>11. Surveying and Investigation<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Surveyor<\/td>\n<td>\u25cf<\/td>\n<td>Surveying<\/td>\n<\/tr>\n<tr>\n<td>Layout Specialist<\/td>\n<td>\u25cf<\/td>\n<td>Architectural Surveying and Layout<\/td>\n<\/tr>\n<tr>\n<td>Soil Investigation Specialist<\/td>\n<td>\u25cf<\/td>\n<td>Soil Investigation<\/td>\n<\/tr>\n<tr>\n<td>Geologist<\/td>\n<td>\u25cf<\/td>\n<td>Geological Survey<\/td>\n<\/tr>\n<tr>\n<td>Bowling Alley<\/td>\n<td>\u25cb<\/td>\n<td>Geological Boring<\/td>\n<\/tr>\n<tr>\n<td>Test Prep Center<\/td>\n<td>\u25cb<\/td>\n<td>Materials and Soil Testing<\/td>\n<\/tr>\n<tr>\n<td>Non-Destructive Testing Specialist<\/td>\n<td>\u25cb<\/td>\n<td>Non-Destructive Testing<\/td>\n<\/tr>\n<tr>\n<td>Reinforcement Bar Locator<\/td>\n<td>\u25cb<\/td>\n<td>Internal Inspection of RC Structures<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>There are examples where companies specializing in layout marking use the term \u201clayout marking company\u201d to refer to themselves.<\/p>\n<h3>12. Landscaping, Exterior Construction, and Stonework<\/h3>\n<table>\n<thead>\n<tr>\n<th>How to Address Someone<\/th>\n<th>Ruling<\/th>\n<th>Official\/Related Job Titles<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Landscape Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Landscape Contractor<\/td>\n<\/tr>\n<tr>\n<td>Landscape Gardener<\/td>\n<td>\u25cf<\/td>\n<td>Landscape Construction Worker<\/td>\n<\/tr>\n<tr>\n<td>Landscape Gardener<\/td>\n<td>\u25cf<\/td>\n<td>Landscape Installer<\/td>\n<\/tr>\n<tr>\n<td>Stone Shop<\/td>\n<td>\u25cf<\/td>\n<td>Stonemason<\/td>\n<\/tr>\n<tr>\n<td>Stone Mason<\/td>\n<td>\u25cb<\/td>\n<td>Mason<\/td>\n<\/tr>\n<tr>\n<td>Bricklayer<\/td>\n<td>\u25cf<\/td>\n<td>Block Worker<\/td>\n<\/tr>\n<tr>\n<td>Fence Contractor<\/td>\n<td>\u25cf<\/td>\n<td>Fence Installer<\/td>\n<\/tr>\n<tr>\n<td>Shibaya<\/td>\n<td>\u25cb<\/td>\n<td>Turf Installer<\/td>\n<\/tr>\n<tr>\n<td>Park House<\/td>\n<td>\u25b3<\/td>\n<td>Park Facilities Engineer<\/td>\n<\/tr>\n<tr>\n<td>Playground Equipment Store<\/td>\n<td>\u25cb<\/td>\n<td>Playground Equipment Installer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>13. The number increases even further when architecture-related fields are included (for reference)<\/h3>\n<p>Since construction-related \"ya\" companies commonly operate on civil engineering sites as well, I\u2019ll list their names here for reference. Since I haven\u2019t cross-checked their classifications or job descriptions this time, I\u2019ll limit myself to listing their names.<\/p>\n<ul>\n<li>Carpenter \/ Carpentry Shop<\/li>\n<li>Roofing Contractor<\/li>\n<li>Tile Shop<\/li>\n<li>Auto Body Shop<\/li>\n<li>Window Installer<\/li>\n<li>Glass Shop<\/li>\n<li>ALC Shop<\/li>\n<li>Siding Contractor<\/li>\n<li>Tiler<\/li>\n<li>Waterproofing Contractor<\/li>\n<li>Sticker Shop<\/li>\n<li>Painter<\/li>\n<li>Interior Designer<\/li>\n<li>Wallpaper Installer<\/li>\n<li>Board Shop<\/li>\n<li>Lightweight Ceiling Shop<\/li>\n<li>Door and Window Craftsman<\/li>\n<li>Furniture Store<\/li>\n<li>Tatami Maker<\/li>\n<li>Curtain Shop<\/li>\n<li>Duct Installer<\/li>\n<li>Insulation Company<\/li>\n<li>Insulation Specialist<\/li>\n<li>Air Conditioning Technician<\/li>\n<li>Equipment Contractor<\/li>\n<li>Electronics Store<\/li>\n<li>Electronics Technician<\/li>\n<li>Telecom Guy<\/li>\n<li>Firefighter<\/li>\n<li>Instrumentation Technician<\/li>\n<li>Sign Maker<\/li>\n<li>Sign Shop<\/li>\n<li>Elevator Technician<\/li>\n<li>Gondola Shop<\/li>\n<li>Temporary Housing Contractor<\/li>\n<li>Dry Cleaner<\/li>\n<li>Demolition Contractor<\/li>\n<\/ul>\n<p>Even on residential construction sites, there are soil investigation contractors, scaffolding contractors, rebar contractors, formwork contractors, concrete pumping contractors, sheet metal workers, roof tile installers, siding installers, painters, waterproofing specialists, insulation installers, plasterers, tile setters, interior finishers, tatami mat installers, door and window installers, electricians, plumbing and mechanical contractors, and HVAC technicians\u2014a vast number of these \u201cspecialists\u201d are actively employed on actual construction sites.<\/p>\n<p>Even if we just exclude the duplicates identified so far, there are well over 100 distinct fields of expertise.<\/p>\n<p>Just looking at the numbers in our industry alone, I\u2019m once again struck by how impressive the division of labor in Japan\u2019s construction industry really is, lol.<\/p>\n<p>It really makes you think, \"Seriously, isn't this way too much of a division of labor!??\" doesn't it...<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-67026\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/b2c140cc32ece55d8b6673cce05accc8.jpg\" alt=\"A Comparison of Specialization Cultures in the Construction Industry\" width=\"600\" height=\"338\" \/><\/p>\n<h2>Japan vs. Overseas Comparison Chart [All Categories]<\/h2>\n<p>Next, I will list, to the best of my knowledge, how jobs similar to Japan\u2019s \u201c\u25cb\u25cb-ya\u201d are classified in the occupational classifications of the United States, the United Kingdom, and Australia.<\/p>\n<p>The job titles for overseas positions are based on research using publicly available sources such as O*NET (the U.S. Department of Labor\u2019s occupational database), Safe Work Australia, and IRATA (the International Rope Access Trade Association). Since I looked them all up using AI, I haven\u2019t actually gone out to overseas sites to verify them myself lol (Well, obviously lol).<\/p>\n<p>Please consider this merely as a trend based on the data.<\/p>\n<table>\n<thead>\n<tr>\n<th>Overseas Job Types<\/th>\n<th>Major Countries<\/th>\n<th>Artisans Near Me in Japan<\/th>\n<th>Are there any positions available in Japan?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Steel Fixer<\/td>\n<td>UK and Australia<\/td>\n<td>Reinforcement Contractor<\/td>\n<td>\u25ceAlmost the same<\/td>\n<\/tr>\n<tr>\n<td>Reinforcing Ironworker<\/td>\n<td>\u7c73<\/td>\n<td>Reinforcement Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Rod Buster<\/td>\n<td>\u7c73<\/td>\n<td>Reinforcement Contractor<\/td>\n<td>\u25ce (However, there is no separate term for \u201cRod Buster\u201d in Japan.)<\/td>\n<\/tr>\n<tr>\n<td>Steel Tier<\/td>\n<td>\u7c73<\/td>\n<td>Reinforcement Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Formworker<\/td>\n<td>\u82f1<\/td>\n<td>Formwork Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Scaffolder<\/td>\n<td>UK and Australia<\/td>\n<td>Scaffolding Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Structural Steel Erector<\/td>\n<td>U.S. and Australia<\/td>\n<td>Steel Erector \/ Steel Fabricator<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Rigger<\/td>\n<td>U.S. and Australia<\/td>\n<td>Heavy-Lift Rigger \/ Heavy-Lift Specialist<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Heavy Lift Rigger<\/td>\n<td>\u7c73<\/td>\n<td>Weight Shop<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Pile Driver Operator<\/td>\n<td>\u7c73<\/td>\n<td>Pile Driver \/ Pile Driving Machine Operator<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Piling Attendant<\/td>\n<td>\u82f1<\/td>\n<td>The Pile Driver's Work Area<\/td>\n<td>\u25b3 There is work, but it does not have a specific job title.<\/td>\n<\/tr>\n<tr>\n<td>Groundworker<\/td>\n<td>\u82f1<\/td>\n<td>Earthwork + Landscaping + Drainage + Paving<\/td>\n<td>\u00d7 No one-on-one sessions for Japanese job types<\/td>\n<\/tr>\n<tr>\n<td>Road Surfacing Worker<\/td>\n<td>\u82f1<\/td>\n<td>Paving Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Asphalt Paver Operator<\/td>\n<td>\u7c73<\/td>\n<td>Finisher Operator at a Paving Company<\/td>\n<td>\u25ceWork required<\/td>\n<\/tr>\n<tr>\n<td>Asphalt Raker<\/td>\n<td>\u7c73<\/td>\n<td>Paving Contractor's Rake Operator<\/td>\n<td>\u25b3Independent \"rake shops\" are not common.<\/td>\n<\/tr>\n<tr>\n<td>Screed Operator<\/td>\n<td>\u7c73<\/td>\n<td>Paving Contractor<\/td>\n<td>\u25b3In Japan, this is not usually classified as a separate occupation.<\/td>\n<\/tr>\n<tr>\n<td>Asphalt Roller Operator<\/td>\n<td>\u7c73<\/td>\n<td>Roller Operation<\/td>\n<td>\u25ceWork required<\/td>\n<\/tr>\n<tr>\n<td>Earth Driller<\/td>\n<td>\u7c73<\/td>\n<td>Bowling Alley<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Diamond Driller<\/td>\n<td>\u7c73<\/td>\n<td>Drilling and Core Sampling Companies<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Water Well Driller<\/td>\n<td>\u7c73<\/td>\n<td>Well Drillers \/ Well Contractors<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Driller<\/td>\n<td>\u8c6a<\/td>\n<td>Bowling Alley<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Driller's Assistant<\/td>\n<td>\u8c6a<\/td>\n<td>A Bowling Alley Owner's Perspective<\/td>\n<td>\u25b3 There are virtually no independent positions<\/td>\n<\/tr>\n<tr>\n<td>Shotcrete<\/td>\n<td>\u7c73<\/td>\n<td>Spray Coating Contractors \/ Spray Coating Workers<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Nozzleman<\/td>\n<td>U.S. &amp; International<\/td>\n<td>Spray Applicator<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Cement Mason<\/td>\n<td>\u7c73<\/td>\n<td>Plasterer<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Concrete Finisher<\/td>\n<td>\u7c73<\/td>\n<td>Doma-ya<\/td>\n<td>\u25ceQuite close<\/td>\n<\/tr>\n<tr>\n<td>Concrete Worker<\/td>\n<td>\u8c6a<\/td>\n<td>Concrete Worker \/ Floor Finisher<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Pipelayer<\/td>\n<td>\u7c73<\/td>\n<td>Pipe Fitter \/ Plumber<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Drainer<\/td>\n<td>\u8c6a<\/td>\n<td>Drainage Systems and Plumbing Contractor<\/td>\n<td>\u25b3 In Japan, roles equivalent to the independent \"Drainer\" position are scattered across various organizations.<\/td>\n<\/tr>\n<tr>\n<td>Fence Erector<\/td>\n<td>\u7c73<\/td>\n<td>Fence Contractor<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Blaster<\/td>\n<td>\u7c73<\/td>\n<td>Blasting Specialist<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Powderman<\/td>\n<td>\u7c73<\/td>\n<td>Blasting Specialist<\/td>\n<td>\u25ce The job duties are similar<\/td>\n<\/tr>\n<tr>\n<td>Shot Firer<\/td>\n<td>\u8c6a<\/td>\n<td>Blasting Specialist<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Dredge Operator<\/td>\n<td>\u7c73<\/td>\n<td>Dredging Contractor \/ Dredge Operator<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Rail Track Maintenance Worker<\/td>\n<td>\u7c73<\/td>\n<td>Track Maintenance Worker<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Trackman<\/td>\n<td>\u7c73<\/td>\n<td>Track Worker<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Tunnel Operator<\/td>\n<td>\u82f1<\/td>\n<td>Tunnel Builder<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Pipejacking Technician<\/td>\n<td>\u82f1<\/td>\n<td>Promoter<\/td>\n<td>\u25ce<\/td>\n<\/tr>\n<tr>\n<td>Mastic Asphalter<\/td>\n<td>\u82f1<\/td>\n<td>Asphalt Waterproofing Contractor<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Laggers<\/td>\n<td>\u8c6a<\/td>\n<td>Insulation Company<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Construction Rigger<\/td>\n<td>\u8c6a<\/td>\n<td>Roofer \/ Heavy-Lift Roofer<\/td>\n<td>\u25ceClose<\/td>\n<\/tr>\n<tr>\n<td>Crane Chaser<\/td>\n<td>\u8c6a<\/td>\n<td>Sling Operator \/ Signal Person<\/td>\n<td>\u00d7 There are virtually no independent \"\u25cb\u25cb shops\"<\/td>\n<\/tr>\n<tr>\n<td>Dogger<\/td>\n<td>\u8c6a<\/td>\n<td>Sling Operators and Signalers<\/td>\n<td>\u00d7In Japan, this is not treated as a separate job category.<\/td>\n<\/tr>\n<tr>\n<td>Surveyor's Assistant<\/td>\n<td>\u8c6a<\/td>\n<td>Surveying Assistant \/ Field Assistant<\/td>\n<td>\u25b3 Not a strong standalone job category<\/td>\n<\/tr>\n<tr>\n<td>Steeplejack<\/td>\n<td>\u82f1<\/td>\n<td>Roofer + Rope Access + High-Altitude Repairs<\/td>\n<td>\u00d7No direct equivalent position in Japan<\/td>\n<\/tr>\n<tr>\n<td>Rope Access Technician<\/td>\n<td>International<\/td>\n<td>Rope Access Worker<\/td>\n<td>\u25b3 Although there is work in this area, it is not a major independent CCUS sector in Japan.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Here's the AI's response exactly as it is lol<\/p>\n<p>I was actually able to verify this by searching the U.S. Department of Labor\u2019s O*NET occupational database, which lists<strong>\"Rodbuster\" as an alternative name for \"Reinforcing Iron and Rebar Workers\"<\/strong>, and<strong>Within the single occupational category titled \u201cPaving, Surfacing, and Tamping Equipment Operators,\u201d the following job titles are listed: Asphalt Paver Operator, Asphalt Raker, Screed Operator, and Asphalt Roller Operator.<\/strong>These are the two points. In other words, official documents confirm that in the United States, while road paving is classified as a single occupational category, the job titles used on-site are divided by machine type and role. Please note that the information regarding other items is based on research using industry materials and publicly available information from various countries.<\/p>\n<h2>Jobs that exist overseas but haven't evolved into independent \"\u25cb\u25cb-ya\" businesses in Japan<\/h2>\n<p>I\u2019ll also introduce the opposite scenario: jobs that are recognized as distinct professions or certifications overseas, but in Japan are scattered across multiple \u201cXX-ya\u201d roles.<\/p>\n<h3>Groundworker (UK)<\/h3>\n<p>In the United Kingdom, it is recognized as a distinct profession, encompassing tasks ranging from site preparation, layout, drainage, and concrete work to the construction of roads, sidewalks, and hard landscaping.<\/p>\n<p>In Japan, I imagine these roles would be divided among an earthwork contractor, a landscaping contractor, a drainage contractor, and a paving contractor. Therefore, it follows that there is no single \u201c\u25cb\u25cb-ya\u201d that perfectly matches the Japanese model.<\/p>\n<h3>Piling Attendant (United Kingdom)<\/h3>\n<p>This is a profession that serves as an assistant to a pile driver. While there are, of course, people in Japan who perform this work, the practice of operating as a separate category of craftsman known as a \u201cpile driver\u2019s assistant\u201d is not common.<\/p>\n<p>The general consensus is that while the work itself exists in Japan, it is virtually nonexistent there as a distinct occupational category.<\/p>\n<h3>Dogger (Australia)<\/h3>\n<p>In Australia, \"dogging\" is classified as a separate high-risk work license category.<\/p>\n<p>Safe Work Australia also classifies \"Dogging\" and \"Rigging\" as separate license categories.<\/p>\n<p>In Japan, this would typically involve slinging and crane signaling, but since the system isn\u2019t structured in such a way that specialized \u201cslinging contractors\u201d routinely visit job sites, the conclusion is that there is no direct one-to-one equivalent of \u201cXX-ya\u201d in Japan.<\/p>\n<h3>Crane Chaser (Australia)<\/h3>\n<p>This is recognized as a distinct profession involving the slinging of loads onto cranes and winches, directing the movement of loads, verifying load weights, and signaling to operators. In Japan, this role would correspond to a slinger plus a signaler; however, specialized companies equivalent to \u201cCrane Chaser\u201d firms do not exist within the standard Japanese civil engineering construction system.<\/p>\n<h3>Steeplejack (United Kingdom)<\/h3>\n<p>They are considered specialists in working at heights to repair tall chimneys, towers, high-rise buildings, monuments, bridges, and other structures; their work is said to include scaffolding, harnesses, roofing, masonry, painting, demolition, and lightning rod installation.<\/p>\n<p>In Japan, these services are typically divided among scaffolders, rope access specialists, painters, and repair contractors, so it is reasonable to conclude that there is no single \u201cXX specialist\u201d who handles them directly.<\/p>\n<h3>Rope Access Technician (International)<\/h3>\n<p>IRATA (International Rope Access Trade Association) has established a globally standardized certification program for Industrial Rope Access Technicians, and this skill is reportedly used in construction, civil engineering, and natural slopes. As of 2026, IRATA reports that it has trained over 130,000 rope access technicians at more than 700 companies worldwide.<\/p>\n<p>Although rope access construction is practiced in Japan as well, \u201crope access contractors\u201d are not recognized as a major independent field by the Ministry of Land, Infrastructure, Transport and Tourism\u2019s CCUS.<\/p>\n<h2>How Are Japanese \"Slope Contractors\" Perceived Overseas?<\/h2>\n<p>This is what I was most curious about this time.<\/p>\n<p>We were unable to identify any standard occupational classifications within the official occupational classifications of the United States, the United Kingdom, and Australia that directly correspond to the broad category of \u201cslope contractor\u201d found in Japan.<\/p>\n<p>Overseas, it seems that job roles tend to be divided into distinct functional categories depending on the nature of the work.<\/p>\n<table>\n<thead>\n<tr>\n<th>The Work of Slope Engineers in Japan<\/th>\n<th>Job Types Considered Similar Overseas<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Sprayed Mortar<\/td>\n<td>Shotcreting Operator \/ Nozzle Operator<\/td>\n<\/tr>\n<tr>\n<td>Drilling<\/td>\n<td>Driller<\/td>\n<\/tr>\n<tr>\n<td>Anchor<\/td>\n<td>Drilling \/ Ground Engineering Crew<\/td>\n<\/tr>\n<tr>\n<td>Rock Bolt<\/td>\n<td>Ground Support \/ Drilling Crew<\/td>\n<\/tr>\n<tr>\n<td>Work at Height on Slopes<\/td>\n<td>Rope Access Technician<\/td>\n<\/tr>\n<tr>\n<td>Blasting<\/td>\n<td>Blaster \/ Shot Firer<\/td>\n<\/tr>\n<tr>\n<td>Ground Improvement<\/td>\n<td>Ground Engineering<\/td>\n<\/tr>\n<tr>\n<td>Vegetation<\/td>\n<td>Landscaping \/ Erosion Control Crew<\/td>\n<\/tr>\n<tr>\n<td>Heavy Equipment Shaping<\/td>\n<td>Heavy Equipment Operator<\/td>\n<\/tr>\n<tr>\n<td>Rockfall Prevention Measures<\/td>\n<td>Rockfall \/ Rope Access \/ Geotechnical Contractor<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In the United States, shotcrete professionals are certified by the ACI (American Concrete Institute) as \u201cshotcreters,\u201d and certifications are reportedly categorized by method, including wet-mix and dry-mix.<\/p>\n<p>In other words, the scope of work typically handled by a single Japanese slope stabilization contractor\u2014including (drilling, rebar insertion, and anchoring) as well as (shotcrete application, formwork, wire mesh, vegetation, and rockfall protection)\u2014appears to correspond, under international occupational classifications, to a single company encompassing multiple specialized trades.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-41157\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/02\/2019-12-08-08.53.32.jpg\" alt=\"Drilling\" width=\"600\" height=\"450\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/02\/2019-12-08-08.53.32.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/02\/2019-12-08-08.53.32-300x225.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>*The discussion of international classifications presented so far is based on research using publicly available materials such as O*NET, Safe Work Australia, and IRATA.<\/p>\n<p>Please consider this merely as a trend based on the data.<\/p>\n<p>I think the actual implementation varies by country, state, and organization.<\/p>\n<h2>What Finally Became Clear<\/h2>\n<p>Broadly speaking, the \u201c\u25cb\u25cb-ya\u201d companies in Japan\u2019s construction industry form a massive specialized division of labor system encompassing earthwork and ground improvement \u2192 slope stabilization \u2192 foundation piles \u2192 concrete \u2192 steel framing \u2192 roads \u2192 bridges \u2192 tunnels \u2192 rivers and ports \u2192 water and sewer systems \u2192 railways \u2192 surveying \u2192 exterior construction \u2192 building systems and Architecture.<\/p>\n<p>Even just within the scope of this research, I was able to identify over 100 different types of \u201c\u25cb\u25cb-ya\u201d stores, excluding duplicates.<\/p>\n<p>What is particularly distinctive about Japan compared to other countries is that<strong>Referring to a company or team as \u201c\u25cb\u25cb-ya\u201d<\/strong>In contrast, the U.K., the U.S., and Australia<strong>Breaking down an individual\u2019s job skills into separate \u201ctrades\u201d (skilled occupations)<\/strong>It feels like there's a tendency toward that.<\/p>\n<p>That\u2019s exactly why, overseas, there are jobs like Rod Buster, Piling Attendant, Groundworker, Dogger, Crane Chaser, and Steeplejack\u2014jobs that, to Japanese people, make you wonder, \u201cIs that really a separate profession all on its own?\u201d<\/p>\n<p>Conversely, the model adopted by Japanese slope maintenance contractors\u2014which combines multiple skills into a single specialized industry\u2014had no direct counterpart among the official classifications in the United Kingdom, the United States, and Australia that we examined this time.<\/p>\n<p>I don't think it's a matter of which one is better; I just think the way the work is structured is different.<\/p>\n<p>If job roles were as rigidly defined as they are overseas, a small company like ours might actually have had trouble keeping operations running smoothly.<\/p>\n<p>When we compare our job titles with international classifications like this, we often make discoveries we wouldn\u2019t normally notice.<\/p>\n<p>That's really interesting!<\/p>\n<p>&nbsp;<\/p>\n<p>See you later.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Hello, everyone. This is Enta. In my last post, I wrote a brief article introducing \u201c\u25cb\u25cb-ya,\u201d but I received feedback saying, \u201cI want to know everything about it\u201d and \u201cDon\u2019t leave out the international locations.\u201d You\u2019re absolutely right. If I only highlight a partial, incomplete picture, it actually makes people wonder, \u201cThis is included, but what about that\u2026?\u201d<\/p>","protected":false},"author":2,"featured_media":67027,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[4529,14271],"tags":[14523,14524,14525,14526,14527],"class_list":["post-67019","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-for-everyone","category-construction-industry-3","tag-14523","tag-14524","tag-14525","tag-14526","tag-14527"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044 - \u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e<\/title>\n<meta name=\"description\" content=\"\u6cd5\u9762\u5c4b\u3001\u9244\u7b4b\u5c4b\u3001\u578b\u67a0\u5c4b\u3001\u30b3\u30a2\u5c4b\u2026\u5efa\u8a2d\u73fe\u5834\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u547c\u3073\u3092\u3001\u5224\u5b9a\u57fa\u6e96\u4ed8\u304d\u3067100\u7a2e\u985e\u4ee5\u4e0a\u307e\u3068\u3081\u3066\u66f8\u304d\u51fa\u3057\u307e\u3057\u305f\u3002\u56fd\u4ea4\u7701CCUS\u306e\u8077\u7a2e\u533a\u5206\u3084\u30a2\u30e1\u30ea\u30ab\u30fb\u30a4\u30ae\u30ea\u30b9\u30fb\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u8077\u696d\u5206\u985e\u3082\u4e26\u3079\u3066\u3001\u65e5\u672c\u3068\u6d77\u5916\u306e\u5efa\u8a2d\u696d\u306e\u7d30\u5206\u5316\u6587\u5316\u306e\u9055\u3044\u3092\u6cd5\u9762\u5c4b\u306e\u30a8\u30f3\u30bf\u304c\u8abf\u3079\u3066\u3044\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/norimen.net\/en\/japan-construction-trades-oo-ya-complete-list\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044\" \/>\n<meta property=\"og:description\" content=\"\u6cd5\u9762\u5c4b\u3001\u9244\u7b4b\u5c4b\u3001\u578b\u67a0\u5c4b\u3001\u30b3\u30a2\u5c4b\u2026\u5efa\u8a2d\u73fe\u5834\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u547c\u3073\u3092\u3001\u5224\u5b9a\u57fa\u6e96\u4ed8\u304d\u3067100\u7a2e\u985e\u4ee5\u4e0a\u307e\u3068\u3081\u3066\u66f8\u304d\u51fa\u3057\u307e\u3057\u305f\u3002\u56fd\u4ea4\u7701CCUS\u306e\u8077\u7a2e\u533a\u5206\u3084\u30a2\u30e1\u30ea\u30ab\u30fb\u30a4\u30ae\u30ea\u30b9\u30fb\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u8077\u696d\u5206\u985e\u3082\u4e26\u3079\u3066\u3001\u65e5\u672c\u3068\u6d77\u5916\u306e\u5efa\u8a2d\u696d\u306e\u7d30\u5206\u5316\u6587\u5316\u306e\u9055\u3044\u3092\u6cd5\u9762\u5c4b\u306e\u30a8\u30f3\u30bf\u304c\u8abf\u3079\u3066\u3044\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/norimen.net\/en\/japan-construction-trades-oo-ya-complete-list\/\" \/>\n<meta property=\"og:site_name\" content=\"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/norimenman\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/norimenman\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-13T23:00:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"338\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u30a8\u30f3\u30bf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@norimenman\" \/>\n<meta name=\"twitter:site\" content=\"@norimenman\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u30a8\u30f3\u30bf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"26 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/\"},\"author\":{\"name\":\"\u30a8\u30f3\u30bf\",\"@id\":\"https:\\\/\\\/norimen.net\\\/#\\\/schema\\\/person\\\/7e507d48b040ed0f7a88ef4625070b95\"},\"headline\":\"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044\",\"datePublished\":\"2026-09-13T23:00:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/\"},\"wordCount\":214,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/7803ec6ac7497a469f3912f0dc4b0740.jpg\",\"keywords\":[\"\u5efa\u8a2d\u696d\u754c\u306e\u8077\u7a2e\",\"\u6cd5\u9762\u5c4b\u3068\u306f\",\"\u5efa\u8a2d\u696d\u8c46\u77e5\u8b58\",\"\u571f\u6728\u696d\u754c\u6bd4\u8f03\",\"\u5efa\u8a2d\u696d\u754c\u306e\u8077\u7a2e\u4e00\u89a7\"],\"articleSection\":[\"\u4e00\u822c\u4eba\u5411\u3051(\u4ed6\u696d\u7a2e)\",\"\u5efa\u8a2d\u696d\u5168\u4f53\u306e\u8a71\u3057\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/\",\"url\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/\",\"name\":\"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044 - \u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/7803ec6ac7497a469f3912f0dc4b0740.jpg\",\"datePublished\":\"2026-09-13T23:00:40+00:00\",\"description\":\"\u6cd5\u9762\u5c4b\u3001\u9244\u7b4b\u5c4b\u3001\u578b\u67a0\u5c4b\u3001\u30b3\u30a2\u5c4b\u2026\u5efa\u8a2d\u73fe\u5834\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u547c\u3073\u3092\u3001\u5224\u5b9a\u57fa\u6e96\u4ed8\u304d\u3067100\u7a2e\u985e\u4ee5\u4e0a\u307e\u3068\u3081\u3066\u66f8\u304d\u51fa\u3057\u307e\u3057\u305f\u3002\u56fd\u4ea4\u7701CCUS\u306e\u8077\u7a2e\u533a\u5206\u3084\u30a2\u30e1\u30ea\u30ab\u30fb\u30a4\u30ae\u30ea\u30b9\u30fb\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u8077\u696d\u5206\u985e\u3082\u4e26\u3079\u3066\u3001\u65e5\u672c\u3068\u6d77\u5916\u306e\u5efa\u8a2d\u696d\u306e\u7d30\u5206\u5316\u6587\u5316\u306e\u9055\u3044\u3092\u6cd5\u9762\u5c4b\u306e\u30a8\u30f3\u30bf\u304c\u8abf\u3079\u3066\u3044\u307e\u3059\u3002\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#primaryimage\",\"url\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/7803ec6ac7497a469f3912f0dc4b0740.jpg\",\"contentUrl\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/7803ec6ac7497a469f3912f0dc4b0740.jpg\",\"width\":600,\"height\":338,\"caption\":\"\u4e16\u754c\u306e\u25cb\u25cb\u5c4b\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u30db\u30fc\u30e0\",\"item\":\"https:\\\/\\\/norimen.net\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/norimen.net\\\/#website\",\"url\":\"https:\\\/\\\/norimen.net\\\/\",\"name\":\"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e\",\"description\":\"\u6cd5\u9762\u306e\u4e8b\u3092\u672c\u6c17\u3067\u77e5\u308a\u305f\u3044\u3042\u306a\u305f\u3078\uff01\",\"publisher\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/#organization\"},\"alternateName\":\"\u30a8\u30f3\u30bf\u306e\u30ce\u30ea\u30e1\u30f3\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/norimen.net\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Organization\",\"Place\"],\"@id\":\"https:\\\/\\\/norimen.net\\\/#organization\",\"name\":\"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e\",\"alternateName\":\"\u5869\u7530\u958b\u767a\u682a\u5f0f\u4f1a\u793e\",\"url\":\"https:\\\/\\\/norimen.net\\\/\",\"logo\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#local-main-organization-logo\"},\"image\":{\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#local-main-organization-logo\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/norimenman\",\"https:\\\/\\\/x.com\\\/norimenman\",\"https:\\\/\\\/www.instagram.com\\\/enta.d\"],\"telephone\":[],\"openingHoursSpecification\":[{\"@type\":\"OpeningHoursSpecification\",\"dayOfWeek\":[\"Monday\",\"Tuesday\",\"Wednesday\",\"Thursday\",\"Friday\",\"Saturday\",\"Sunday\"],\"opens\":\"09:00\",\"closes\":\"17:00\"}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/norimen.net\\\/#\\\/schema\\\/person\\\/7e507d48b040ed0f7a88ef4625070b95\",\"name\":\"\u30a8\u30f3\u30bf\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g\",\"caption\":\"\u30a8\u30f3\u30bf\"},\"description\":\"\u5927\u624b\u6cd5\u9762\u5c02\u9580\u5efa\u8a2d\u4f1a\u793e\u306b\u5c31\u8077\u5f8c\u300132\u6b73\u3067\u72ec\u7acb\u3002 \u3042\u307e\u308a\u306e\u6687\u3055\u306b\u30d6\u30ed\u30b0\u3092\u958b\u8a2d\u3002\u6cd5\u9762\u306e\u30ce\u30a6\u30cf\u30a6\u3092\u516c\u958b\u3057\u3001\u3042\u308a\u3068\u3042\u3089\u3086\u308b\u8cea\u554f\u306b\u7b54\u3048\u3066\u304d\u307e\u3057\u305f\u3002 \u305d\u306e\u7d50\u679c\u3001\u6cd5\u9762\u696d\u8005\u3001\u5143\u8acb\u696d\u8005\u3001\u305d\u306e\u4ed6\u30bc\u30cd\u30b3\u30f3\u304b\u3089\u306e\u554f\u3044\u5408\u308f\u305b\u3001\u8cea\u554f\u3001\u53d7\u6ce8\u304c\u5897\u3048\u3066\u304d\u307e\u3057\u305f\u3002 \u30a2\u30e1\u30d6\u30ed\u3067\u306f\u30bd\u30b3\u30bd\u30b3\u95b2\u89a7\u304c\u5897\u3048\u3001 \u305d\u3053\u3067\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u53d6\u5f97\u3057\u5c11\u3057\u3067\u3082\u5feb\u9069\u306a\u30d6\u30ed\u30b0\u3092\u76ee\u5dee\u3059\u3079\u304f\u3001\u30a2\u30e1\u30d6\u30ed\u304b\u3089\u306e\u5352\u696d\u3092\u6c7a\u3081\u307e\u3057\u305f\u3002 \u4eca\u5f8c\u3082\u3053\u3061\u3089\u3067\u5305\u307f\u96a0\u3055\u305a\u5168\u3066\u306e\u30ce\u30a6\u30cf\u30a6\u3092\u516c\u958b\u3057\u3066\u3044\u3053\u3046\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002 \u4eca\u5f8c\u3068\u3082\u3088\u308d\u3057\u304f\u304a\u9858\u3044\u7533\u3057\u4e0a\u3052\u307e\u3059\u3002\",\"sameAs\":[\"http:\\\/\\\/enta-d.co.jp\\\/\",\"https:\\\/\\\/www.facebook.com\\\/norimenman\\\/\",\"https:\\\/\\\/www.instagram.com\\\/enta.d\\\/\",\"https:\\\/\\\/x.com\\\/norimenman\",\"https:\\\/\\\/www.youtube.com\\\/c\\\/entadnorimenman\"]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/norimen.net\\\/japan-construction-trades-oo-ya-full-list\\\/#local-main-organization-logo\",\"url\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2016\\\/10\\\/site_title_logo.png\",\"contentUrl\":\"https:\\\/\\\/norimen.net\\\/wordpress\\\/wp-content\\\/uploads\\\/2016\\\/10\\\/site_title_logo.png\",\"width\":220,\"height\":50,\"caption\":\"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"I Listed All of Japan's \"\u25cb\u25cb-ya\" Businesses | Differences in Specialization Compared to Overseas, as Seen by Slope Contractors and Reinforcement Contractors - Shin-Ent's Slope Management School","description":"Slope Workers, Reinforcement Workers, Formwork Workers, Core Drilling Workers\u2026 We\u2019ve compiled a list of over 100 types of \u201c\u25cb\u25cb Workers\u201d found on construction sites, complete with their classification criteria. Entar, a slope worker, examines the differences in the culture of job specialization between Japan and other countries by comparing the job classifications used by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) for CCUS with those in the United States, the United Kingdom, and Australia.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/norimen.net\/en\/japan-construction-trades-oo-ya-complete-list\/","og_locale":"en_US","og_type":"article","og_title":"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044","og_description":"\u6cd5\u9762\u5c4b\u3001\u9244\u7b4b\u5c4b\u3001\u578b\u67a0\u5c4b\u3001\u30b3\u30a2\u5c4b\u2026\u5efa\u8a2d\u73fe\u5834\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u547c\u3073\u3092\u3001\u5224\u5b9a\u57fa\u6e96\u4ed8\u304d\u3067100\u7a2e\u985e\u4ee5\u4e0a\u307e\u3068\u3081\u3066\u66f8\u304d\u51fa\u3057\u307e\u3057\u305f\u3002\u56fd\u4ea4\u7701CCUS\u306e\u8077\u7a2e\u533a\u5206\u3084\u30a2\u30e1\u30ea\u30ab\u30fb\u30a4\u30ae\u30ea\u30b9\u30fb\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u8077\u696d\u5206\u985e\u3082\u4e26\u3079\u3066\u3001\u65e5\u672c\u3068\u6d77\u5916\u306e\u5efa\u8a2d\u696d\u306e\u7d30\u5206\u5316\u6587\u5316\u306e\u9055\u3044\u3092\u6cd5\u9762\u5c4b\u306e\u30a8\u30f3\u30bf\u304c\u8abf\u3079\u3066\u3044\u307e\u3059\u3002","og_url":"https:\/\/norimen.net\/en\/japan-construction-trades-oo-ya-complete-list\/","og_site_name":"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e","article_publisher":"https:\/\/www.facebook.com\/norimenman","article_author":"https:\/\/www.facebook.com\/norimenman\/","article_published_time":"2026-09-13T23:00:40+00:00","og_image":[{"width":600,"height":338,"url":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","type":"image\/jpeg"}],"author":"\u30a8\u30f3\u30bf","twitter_card":"summary_large_image","twitter_creator":"@norimenman","twitter_site":"@norimenman","twitter_misc":{"Written by":"\u30a8\u30f3\u30bf","Est. reading time":"26 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#article","isPartOf":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/"},"author":{"name":"\u30a8\u30f3\u30bf","@id":"https:\/\/norimen.net\/#\/schema\/person\/7e507d48b040ed0f7a88ef4625070b95"},"headline":"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044","datePublished":"2026-09-13T23:00:40+00:00","mainEntityOfPage":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/"},"wordCount":214,"commentCount":0,"publisher":{"@id":"https:\/\/norimen.net\/#organization"},"image":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#primaryimage"},"thumbnailUrl":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","keywords":["\u5efa\u8a2d\u696d\u754c\u306e\u8077\u7a2e","\u6cd5\u9762\u5c4b\u3068\u306f","\u5efa\u8a2d\u696d\u8c46\u77e5\u8b58","\u571f\u6728\u696d\u754c\u6bd4\u8f03","\u5efa\u8a2d\u696d\u754c\u306e\u8077\u7a2e\u4e00\u89a7"],"articleSection":["\u4e00\u822c\u4eba\u5411\u3051(\u4ed6\u696d\u7a2e)","\u5efa\u8a2d\u696d\u5168\u4f53\u306e\u8a71\u3057"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/","url":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/","name":"I Listed All of Japan's \"\u25cb\u25cb-ya\" Businesses | Differences in Specialization Compared to Overseas, as Seen by Slope Contractors and Reinforcement Contractors - Shin-Ent's Slope Management School","isPartOf":{"@id":"https:\/\/norimen.net\/#website"},"primaryImageOfPage":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#primaryimage"},"image":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#primaryimage"},"thumbnailUrl":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","datePublished":"2026-09-13T23:00:40+00:00","description":"Slope Workers, Reinforcement Workers, Formwork Workers, Core Drilling Workers\u2026 We\u2019ve compiled a list of over 100 types of \u201c\u25cb\u25cb Workers\u201d found on construction sites, complete with their classification criteria. Entar, a slope worker, examines the differences in the culture of job specialization between Japan and other countries by comparing the job classifications used by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) for CCUS with those in the United States, the United Kingdom, and Australia.","breadcrumb":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#primaryimage","url":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","contentUrl":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","width":600,"height":338,"caption":"\u4e16\u754c\u306e\u25cb\u25cb\u5c4b"},{"@type":"BreadcrumbList","@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u30db\u30fc\u30e0","item":"https:\/\/norimen.net\/"},{"@type":"ListItem","position":2,"name":"\u65e5\u672c\u306e\u300c\u25cb\u25cb\u5c4b\u300d\u5168\u90e8\u66f8\u304d\u51fa\u3057\u3066\u307f\u305f\uff5c\u6cd5\u9762\u5c4b\u30fb\u9244\u7b4b\u5c4b\u304b\u3089\u898b\u308b\u6d77\u5916\u3068\u306e\u7d30\u5206\u5316\u306e\u9055\u3044"}]},{"@type":"WebSite","@id":"https:\/\/norimen.net\/#website","url":"https:\/\/norimen.net\/","name":"Shin-Ent's Slope Management Seminar","description":"For those of you who are serious about learning about slopes!","publisher":{"@id":"https:\/\/norimen.net\/#organization"},"alternateName":"\u30a8\u30f3\u30bf\u306e\u30ce\u30ea\u30e1\u30f3","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/norimen.net\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Organization","Place"],"@id":"https:\/\/norimen.net\/#organization","name":"Shin-Ent's Slope Management Seminar","alternateName":"\u5869\u7530\u958b\u767a\u682a\u5f0f\u4f1a\u793e","url":"https:\/\/norimen.net\/","logo":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#local-main-organization-logo"},"image":{"@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#local-main-organization-logo"},"sameAs":["https:\/\/www.facebook.com\/norimenman","https:\/\/x.com\/norimenman","https:\/\/www.instagram.com\/enta.d"],"telephone":[],"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"],"opens":"09:00","closes":"17:00"}]},{"@type":"Person","@id":"https:\/\/norimen.net\/#\/schema\/person\/7e507d48b040ed0f7a88ef4625070b95","name":"Entertainment","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7b9657262458e754e6e51a10396868dafe6afa60d649dffcd4d52a5fc01aaa7d?s=96&d=monsterid&r=g","caption":"\u30a8\u30f3\u30bf"},"description":"After joining a major construction company specializing in slope stabilization, I went independent at the age of 32. With so much free time on my hands, I started a blog. I\u2019ve been sharing my expertise on slope stabilization and answering all kinds of questions. As a result, I\u2019ve seen an increase in inquiries, questions, and orders from slope stabilization contractors, general contractors, and other major construction firms. My traffic on Ameblo grew to a reasonable level, so I decided to move on from Ameblo by acquiring my own domain in order to create a more user-friendly blog. I plan to continue sharing all my expertise openly and honestly here. I look forward to your continued support.","sameAs":["http:\/\/enta-d.co.jp\/","https:\/\/www.facebook.com\/norimenman\/","https:\/\/www.instagram.com\/enta.d\/","https:\/\/x.com\/norimenman","https:\/\/www.youtube.com\/c\/entadnorimenman"]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/norimen.net\/japan-construction-trades-oo-ya-full-list\/#local-main-organization-logo","url":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2016\/10\/site_title_logo.png","contentUrl":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2016\/10\/site_title_logo.png","width":220,"height":50,"caption":"\u65b0\u30a8\u30f3\u30bf\u306e\u6cd5\u9762\u7ba1\u7406\u587e"}]}},"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"publishpress_future_action":{"enabled":false,"date":"2026-09-23 04:33:33","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"jetpack_featured_media_url":"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/09\/7803ec6ac7497a469f3912f0dc4b0740.jpg","_links":{"self":[{"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/posts\/67019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/comments?post=67019"}],"version-history":[{"count":3,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/posts\/67019\/revisions"}],"predecessor-version":[{"id":67028,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/posts\/67019\/revisions\/67028"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/media\/67027"}],"wp:attachment":[{"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/media?parent=67019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/categories?post=67019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/norimen.net\/en\/wp-json\/wp\/v2\/tags?post=67019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}