Enforcement record

Business Suspension against 多野産業株式会社

多野産業（株） (Construction Business Act)

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Construction Business ActGunma PrefectureConfirmed entity match11 March 2026

Action type

Business Suspension

Law

Construction Business Act

Authority

Gunma Prefecture

Action date

11 March 2026

Current page: Enforcement record

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Source verification

Public-source and preservation status

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

“Confirmed” means that RegBase matched this record to the cited public disclosure or entity under the stated checks. It does not verify the truth of the disclosure or guarantee the entity’s current status, creditworthiness, or any legal conclusion.

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

Action summary

Company: 多野産業株式会社Japanese original
Original: 多野産業（株）
Corporate Number: 4070001012471
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: Business Suspension
営業停止
Action date: 11 March 2026
Issuing authority: Gunma Prefecture
群馬県
Industry context: 建設業者

Violation

Machine-translated summary — verify against original

In late June of Reiwa 6 (2024), Yuichiro Kosaka, then CEO of Tano Sangyo Co., Ltd., received secret information regarding the minimum bid price for the Hirai Elementary School Gymnasium Major Renovation Construction Project from Eio Tsukamoto, Vice Mayor of Fujioka City, by phone. Around July 3, Reiwa 6, Yuichiro Kosaka instructed Tano Sangyo Co., Ltd. to submit a bid equal to the minimum bid price and on July 4, the company was awarded the contract for the project. This involved using fraudulent means and disclosing confidential information related to the bid to unfairly influence the contract award. On October 7, Reiwa 7, the Maebashi District Court sentenced him to 1 year and 6 months in prison, with a three-year probation, and the sentence was finalized.

Show original Japanese text

令和６年６月下旬頃、多野産業（株）代表取締役小坂裕一郎（当時）は、藤岡市が執行する「平井小学校体育館大規模改修建築工事」の条件付き一般競争入札に関し、同市副市長塚本英夫から電話により、前記入札に関する秘密事項である同工事の最低制限価格の教示を受けた。令和６年７月３日頃、小坂裕一郎は前記入札において、多野産業（株）に最低制限価格と同額の入札をさせた上、同月４日、同社に同工事を落札させ、もって偽計を用いるとともに入札等に関する秘密を教示することにより、入札で契約を締結するためのものの公正を害すべき行為をし、令和７年１０月７日に前橋地方裁判所から懲役１年６月、執行猶予３年の判決を受け、その刑が確定した。

Business location and permit details

Business location address: 群馬県藤岡市藤岡1858-1
Representative: 清水泉
Permit / registration number: 群馬県知事（特-5）第2371号
Permitted business types: Civil engineering works, Building works, Plastering works, Scaffolding, earthwork, and concrete works, Roof works, Tile, brick, and block works, Paving works, Painting works, Waterproofing works, Interior finishing works, Fittings works, Demolition works
Legal articles: 建設業法第28条第3項
Cause of action: 令和６年６月下旬頃、多野産業（株）代表取締役小坂裕一郎（当時）は、藤岡市が執行する「平井小学校体育館大規模改修建築工事」の条件付き一般競争入札に関し、同市副市長塚本英夫から電話により、前記入札に関する秘密事項である同工事の最低制限価格の教示を受けた。令和６年７月３日頃、小坂裕一郎は前記入札において、多野産業（株）に最低制限価格と同額の入札をさせた上、同月４日、同社に同工事を落札させ、もって偽計を用いるとともに入札等に関する秘密を教示することにより、入札で契約を締結するためのものの公正を害すべき行為をし、令和７年１０月７日に前橋地方裁判所から懲役１年６月、執行猶予３年の判決を受け、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=1844

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

Compliance context

Context needed

This is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.

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

Review the original Japanese source and determine relevance to your counterparty-risk workflow.

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 Gunma Prefecture source (Japanese)

Extracted at: 2026-10-01T13:40:07.183+00:00
Evidence checked: 2026-10-01T13:40:07.106+00:00
Archive captured: Not archived

Show audit JSON

{
  "record": {
    "id": "6f446ebf-5063-48fd-8bd2-dde9695a8934",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-duo-ye-chan-ye-20260311",
    "company_name_original": "多野産業（株）",
    "company_name_registry": "多野産業株式会社",
    "corporate_number": "4070001012471",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "営業停止",
      "en": "Business Suspension"
    },
    "authority": {
      "ja": "群馬県",
      "en": "Gunma 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": "Context needed",
    "actionMeaning": "This is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.",
    "practicalNote": "Review the original Japanese source and determine relevance to your counterparty-risk workflow.",
    "lawContext": "Construction business law covering licensing, contractor obligations, and public-interest rules for construction work."
  },
  "evidence": {
    "recordUrl": "https://regbase.jp/en/enforcement/kensetsu-gyoho-duo-ye-chan-ye-20260311",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1844",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-10-01T13:40:07.183+00:00",
    "translatedAt": "2026-05-01T07:29:58.782+00:00",
    "evidenceCheckedAt": "2026-10-01T13:40:07.106+00:00",
    "generatedAt": "2026-10-02T03:59:56.930Z"
  },
  "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: 多野産業株式会社 Japanese original
Japanese name: 多野産業株式会社
Corporate Number: 4070001012471
Registered address: 群馬県藤岡市藤岡１８５８番地１

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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.