Action summary

Company

株式会社小山水道建設Japanese original

Original: 株式会社小山水道建設

Corporate Number: 5012301010531

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

18 December 2025

Issuing authority

Kanagawa Prefecture

神奈川県

Industry context

建設業者

Violation

The representative director of Koyama Suido Kensetsu, in relation to the company's operations, on October 18, 2023, at a water pipe replacement construction site located between 5-12 Minami-Naruse, Machida City, Tokyo, and 6-12 Minami-Naruse, Machida City, during asphalt accumulation work on a dump truck bed, a worker fell from the truck bed to the ground, sustaining injuries including traumatic cervical syndrome, and was absent for more than four days. The company and its representative failed to submit the worker injury report to the Hachioji Labor Standards Inspection Office Machida Branch without delay, until June 18, 2024, thereby failing to report as required by law. Consequently, they were sentenced to a fine of 200,000 yen for violating the Industrial Safety and Health Act, as confirmed by the Machida Summary Court on July 25, 2025. This violation corresponds to Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Business location and permit details

Business location address

神奈川県相模原市中央区田名6673－１ Ｄ＋ＳＴＹＬＥサンハイツＩＩ 101号

Representative

小山 格

Permit / registration number

神奈川県知事許可（般－２）第88068号

Permitted business types

土・と・石・鋼・舗・し・水・解

Legal articles

建設業法第28条第１項（第３号該当）

Cause of action

株式会社小山水道建設の代表取締役は、同社の業務に関し、令和５年10月18日、東京都町田市南成瀬５丁目12番地先から同市南成瀬６丁目12番地先間の配水小管布設替工事現場内において、同社の労働者が、ダンプカーの荷台上でアスファルトの集積作業中、同荷台上から地面に落下して外傷性頸部症候群等の傷害を負い、４日以上休業したのであるから、遅滞なく、労働者死傷病報告書を所轄の八王子労働基準監督署町田支署長に提出して報告しなければならなかったのに、令和６年６月18日に至るまで同報告書を提出せず、もって遅滞なく法令で定める報告をしなかった。 このことにより、同社と同社代表取締役に対し、労働安全衛生法違反で罰金20万円の罰金刑が確定した（町田簡易裁判所 令和７年７月25日略式命令）。 このことは、建設業法第28条第１項第３号に該当する。

Other notes

東京労働局長からの相互通報制度に基づく通報

Overview page

https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1889

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

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

Evidence pack

{
  "record": {
    "id": "9db365ca-50ed-428e-a40a-5646f7e4f95c",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-xiao-shan-shui-dao-jian-she-20251218",
    "company_name_original": "株式会社小山水道建設",
    "company_name_registry": "株式会社小山水道建設",
    "corporate_number": "5012301010531",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "指示",
      "en": "Directive"
    },
    "authority": {
      "ja": "神奈川県",
      "en": "Kanagawa Prefecture"
    }
  },
  "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-xiao-shan-shui-dao-jian-she-20251218",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1889",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-08-12T15:11:55.273+00:00",
    "translatedAt": "2026-05-01T07:33:46.572+00:00",
    "evidenceCheckedAt": "2026-08-12T15:11:54.907+00:00",
    "generatedAt": "2026-08-17T23:56:03.168Z"
  },
  "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.