Action summary

Company

株式会社明光建設Japanese original

Original: 株式会社明光建設

Corporate Number: 5122001024408

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

14 July 2023

Issuing authority

Osaka Prefecture

大阪府

Industry context

建設業者

Violation

Mikko Construction Co., Ltd., with permit number Osaka Prefecture Governor (Special-30) No. 131427, was involved in a hospital expansion project in Kishiwada City. The company’s executive, Koji Hamaguchi, was responsible for overseeing construction and worker safety. The company failed to implement necessary safety measures such as installing earth-retaining supports, setting up protective nets, and prohibiting worker entry, which are required to prevent hazards. As a result, both the company and Hamaguchi were fined 300,000 yen each for violations of the Labour Safety and Health Act (Law No. 57 of 1972). The penalties were finalized on April 18 and 19, 2023, respectively. The Osaka Prefectural Government issued an instruction on July 14, 2023, to ensure compliance with the Construction Business Act and related laws, and to prevent similar violations in the future.

Business location and permit details

Business location address

大阪府東大阪市友井二丁目６番17号

Representative

濵口 晃次

Permit / registration number

大阪府知事（特－30）第131427号

Permitted business types

Civil engineering works, Building works, Carpentry works, Plastering works, と石, Roof works, Tile, brick, and block works, Steel structure works, Reinforcing bar works, Paving works, し, Sheet-metal works, Glass works, Painting works, Waterproofing works, Interior finishing works, Thermal insulation works, Fittings works, Water facilities works, Demolition works

Legal articles

建設業法第28条第１項第３号

Cause of action

当該建設業者は、岸和田市所在の病院増築工事を請け負っていたもの、Aは、当該建設業者の専務として同工事の施工及び労働者の安全管理を統括していたものであるが、当該建設業者の業務に関し、あらかじめ、土止め支保工を設け、防護網を張り、労働者の立入りを禁止する等危険を防止するための措置を講じなければならなかったのに、同措置を講じなかった。このことで、Aは、労働安全衛生法（昭和47年法律第57号）違反により、罰金30万円の刑に処せられ、令和５年４月19日にその刑が確定し、当該建設業者は、同法違反により、罰金30万円の刑に処せられ、同月18日にその刑が確定した。

Other notes

大阪労働局からの通報

Overview page

https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=909

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": "25784dc1-e3da-47d7-9cee-fb9765674d86",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-ming-guang-jian-she-20230714",
    "company_name_original": "株式会社明光建設",
    "company_name_registry": "株式会社明光建設",
    "corporate_number": "5122001024408",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "指示",
      "en": "Directive"
    },
    "authority": {
      "ja": "大阪府",
      "en": "Osaka 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-ming-guang-jian-she-20230714",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=909",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-07-17T11:56:25.97+00:00",
    "translatedAt": "2026-07-18T15:20:16.705+00:00",
    "evidenceCheckedAt": "2026-07-17T08:51:08.642+00:00",
    "generatedAt": "2026-07-28T15:25:05.103Z"
  },
  "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.