Enforcement record

Directive against 木部建設株式会社

木部建設株式会社 (Construction Business Act)

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Construction Business ActKantō Regional Development BureauConfirmed entity match11 April 2023

Action type

Directive

Law

Construction Business Act

Authority

Kantō Regional Development Bureau

Action date

11 April 2023

Current page: Enforcement record

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Source verification

Public-source and preservation status

Publishing authority: Kantō Regional Development Bureau
Official source URL: Recorded by RegBase
Entity match: Confirmed against the current entity-resolution policy
Kiroku preservation: Archive not completed

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Open the official source links in the section below to review the original disclosure.

For developers: JSON integration details

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/api/v1/enforcements?corporate_number=8012401011030&limit=10

Open JSON Specs

Action summary

Company: 木部建設株式会社Japanese original
Original: 木部建設株式会社
Corporate Number: 8012401011030
Entity match: Confirmed entity match100/100Machine checked
source_corporate_number_nta_current_name
国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。
Governing law: Construction Business Act
建設業法
Action type: Directive
指示
Action date: 11 April 2023
Issuing authority: Kantō Regional Development Bureau
関東地方整備局
Industry context: 建設業者

Violation

Machine-translated summary — verify against original

On June 11, 2022, at a drainage tunnel construction site in Nishikawa Town, Nishimurayama District, Yamagata Prefecture, a boom lift rolled backward, resulting in the death of one worker. The worker was supposed to stop the engine and apply the brake to prevent the lift from rolling away when leaving the operator's seat, but failed to do so. As a result, the lift rolled backward, causing a safety hazard. The company and one employee were subsequently issued a summary order on November 17, 2022, by the Yamagata Summary Court for violating the Labor Safety and Health Act, each fined 200,000 yen, and their sentences were finalized. This incident is deemed to fall under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Show original Japanese text

木部建設（株）が一次下請として請け負った山形県西村山郡西川町における排水トンネル工事において、令和４年６月１１日、高所作業車が後方に逸走し、作業員1名が死亡する事故が発生した。作業員が高所作業車を停車させて運転席から離れる場合、同車の原動機を止め、かつ、停止状態を保持するためのブレーキを確実にかける等の逸走を防止する措置を講じさせなければならないところ、作業員に同車運転席から離れる際にサイドブレーキを確実にかけさせるなどしなかったため、同車を後方に逸走させたことから、機械等による危険を防止するため必要な措置を講じなかったとして、同社及び同社社員１名が令和４年１１月１７日、山形簡易裁判所より労働安全衛生法違反で略式命令（それぞれ罰金２０万円）を受け、その刑が確定している。このことが建設業法第２８条第１項第３号に該当すると認められる。

Business location and permit details

Business location address: 東京都東京都武蔵野市御殿山１－６－１０
Representative: 木部哲実
Permit / registration number: 国土交通大臣許可(特-3)第6794号
Permitted business types: Civil engineering works, Building works, Carpentry works, Scaffolding, earthwork, and concrete works, Stone works, Reinforcing bar works, Paving works, Waterproofing works, Water facilities works
Legal articles: 建設業法第28条第3項（同条第1項第3号該当）
Cause of action: 木部建設（株）が一次下請として請け負った山形県西村山郡西川町における排水トンネル工事において、令和４年６月１１日、高所作業車が後方に逸走し、作業員1名が死亡する事故が発生した。作業員が高所作業車を停車させて運転席から離れる場合、同車の原動機を止め、かつ、停止状態を保持するためのブレーキを確実にかける等の逸走を防止する措置を講じさせなければならないところ、作業員に同車運転席から離れる際にサイドブレーキを確実にかけさせるなどしなかったため、同車を後方に逸走させたことから、機械等による危険を防止するため必要な措置を講じなかったとして、同社及び同社社員１名が令和４年１１月１７日、山形簡易裁判所より労働安全衛生法違反で略式命令（それぞれ罰金２０万円）を受け、その刑が確定している。このことが建設業法第２８条第１項第３号に該当すると認められる。
Overview page: https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1141

These fields are extracted from the original Japanese disclosure or linked overview pages when available.

Compliance context

Medium

A regulator issued a directive requiring specified action.

Construction business law covering licensing, contractor obligations, and public-interest rules for construction work.

Verify the required action and whether the company has disclosed remediation or completion.

This context is an operational aid for review workflows, not a credit opinion or legal conclusion.

Open original sources and verification detailsOfficial URL, direct PDF, and Kiroku archive

Original Kantō Regional Development Bureau source (Japanese)

Extracted at: 2026-07-17T11:56:25.97+00:00
Evidence checked: 2026-07-17T08:52:16.485+00:00
Archive captured: Not archived

Show audit JSON

{
  "record": {
    "id": "5cbeb3fa-f314-4d0e-a973-b5bc274e44dc",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-mu-bu-jian-she-20230411",
    "company_name_original": "木部建設株式会社",
    "company_name_registry": "木部建設株式会社",
    "corporate_number": "8012401011030",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "指示",
      "en": "Directive"
    },
    "authority": {
      "ja": "関東地方整備局",
      "en": "Kantō Regional Development Bureau"
    }
  },
  "entity_match": {
    "status": "confirmed",
    "confidence": 100,
    "method": "source_corporate_number_nta_current_name",
    "method_label": "source_corporate_number_nta_current_name",
    "notes": "国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。"
  },
  "review": {
    "status": "machine_reviewed",
    "label": "Machine checked"
  },
  "compliance_context": {
    "severity": "Medium",
    "actionMeaning": "A regulator issued a directive requiring specified action.",
    "practicalNote": "Verify the required action and whether the company has disclosed remediation or completion.",
    "lawContext": "Construction business law covering licensing, contractor obligations, and public-interest rules for construction work."
  },
  "evidence": {
    "recordUrl": "https://regbase.jp/en/enforcement/kensetsu-gyoho-mu-bu-jian-she-20230411",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1141",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-07-17T11:56:25.97+00:00",
    "translatedAt": "2026-07-18T14:50:23.082+00:00",
    "evidenceCheckedAt": "2026-07-17T08:52:16.485+00:00",
    "generatedAt": "2026-09-12T06:07:53.857Z"
  },
  "limitations": [
    "RegBase aggregates public Japanese government disclosures and does not provide a credit opinion.",
    "English summaries are provided for reference. The original Japanese source is authoritative.",
    "Possible or unresolved entity matches should be manually verified before use in a decision."
  ]
}

The original Japanese disclosure is the authoritative record. Use possible or unresolved matches only as leads for manual review.

Language

日本語版を見る (Japanese)

Company info

English name: 木部建設株式会社 Japanese original
Japanese name: 木部建設株式会社
Corporate Number: 8012401011030
Registered address: 東京都武蔵野市御殿山１丁目６番１０号

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About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.