Action summary

Company

株式会社岩本技建Japanese original

Original: 株式会社岩本技建

Corporate Number: 4330003002683

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

9 February 2023

Issuing authority

Kumamoto Prefecture

熊本県

Industry context

建設業者

Violation

On December 14, 2021, during a public construction project commissioned by Sankayama Village, Kumamoto Prefecture, a worker was killed when a felled tree bounced back and hit his head. The company, Iwamoto Giken Co., Ltd., did not provide workers with education on chainsaw operation and tree felling methods, nor did it conduct special safety training related to chainsaw use. As a result, the Kumamoto District Court issued a summary order imposing a fine of 200,000 yen on the company and its representative for violations of the Industrial Safety and Health Act. The penalties were finalized on January 11, 2023. Following this incident, the Kumamoto Prefectural authorities issued a formal instruction on February 9, 2023, requiring the company to take measures such as promptly informing staff of the violation details, creating and implementing training plans to ensure compliance with relevant laws, and strengthening safety management systems at the company and construction sites.

Business location and permit details

Business location address

熊本県阿蘇郡産山村田尻1224-5

Representative

岩本 健一

Permit / registration number

熊本県知事許可（特-4）第7279号

Permitted business types

Civil engineering works, Scaffolding, earthwork, and concrete works, Stone works, Pipe works, Steel structure works, Paving works, Painting works, Water facilities works, Demolition works

Legal articles

建設業法第28条第1項（第3号該当）

Cause of action

株式会社岩本技建が請け負った産山村発注の公共工事において、令和3年（2021年）12月14日、切り倒した木が跳ね上がって、同社の労働者の頭に当たり死亡する事故が発生した。この件に関し、チェーンソーを用いて行う立木の伐木業務につかせるに当たり、労働者に対してチェーンソーに関する知識及び伐木等の方法等に関する教育を行わず、もってチェーンソーによる立木の伐木業務に関する安全のための特別の教育を行わなかったとして、阿蘇簡易裁判所から労働安全衛生法違反により、同社及び同社代表取締役に対しそれぞれ罰金20万円の略式命令があり、令和5年（2023年）1月11日、その刑が確定した。

Overview page

https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1115

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": "12a825a2-6b8d-451b-85f0-256ed8e13d6e",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-yan-ben-ji-jian-20230209",
    "company_name_original": "株式会社岩本技建",
    "company_name_registry": "株式会社岩本技建",
    "corporate_number": "4330003002683",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "指示",
      "en": "Directive"
    },
    "authority": {
      "ja": "熊本県",
      "en": "Kumamoto 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-yan-ben-ji-jian-20230209",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1115",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-07-17T11:56:25.97+00:00",
    "translatedAt": "2026-07-18T14:20:21.024+00:00",
    "evidenceCheckedAt": "2026-07-17T08:53:41.752+00:00",
    "generatedAt": "2026-07-26T21:14:13.602Z"
  },
  "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.