Business Suspension against 岡本建設工業株式会社

岡本建設工業株式会社 (Construction Business Act)

Construction Business ActOsaka PrefectureConfirmed entity match13 June 2024

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/api/v1/enforcements?corporate_number=9120001027220&limit=10

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Action summary

Company: 岡本建設工業株式会社Japanese original
Original: 岡本建設工業株式会社
Corporate Number: 9120001027220
Entity match: Confirmed entity match95/100Human reviewed
Normalized Japanese name matched to a company profile with Corporate Number
Matched by normalized Japanese company name to an enriched company profile with a Corporate Number.
Governing law: Construction Business Act
建設業法
Action type: Business Suspension
営業停止
Action date: 13 June 2024
Issuing authority: Osaka Prefecture
大阪府

Violation

Machine-translated summary — verify against original

The construction company participated in a general competitive bidding process for a construction contract ordered by Osaka Prefecture in Osaka City. They applied for bids from Tamai Corporation, the construction company, and Yutaka Corporation using the same IP address. Subsequently, Tamai Corporation and Yutaka Corporation submitted bids from the same IP address. The bid documents for these four companies, including the construction company and Renuve Daito Corporation, contained identical direct construction costs in their cost breakdown sheets. This violated Article 3, Paragraph 3 of the Osaka Prefecture Electronic Bidding Rules, which states that bidders must not disclose bid prices or cost breakdown details to other bidders before the winner is decided. These actions constituted misconduct regarding the bidding and contract procedures for public works.

Show original Japanese text

当該建設業者は、大阪市内の大阪府発注の建設工事の請負契約に係る一般競争入札において、同一のIPアドレスより株式会社タマイ、当該建設業者及び株式会社ユタカが入札参加申請を行った上、同一のIPアドレスより株式会社タマイ及び株式会社ユタカが入札を行い、当該建設業者及びリノヴェ大都株式会社を含めこれら４社の入札書に添付された工事費内訳書記載の直接工事費を全く同一とし、大阪府建設工事電子入札心得第３条第３項の「入札参加者は、落札者の決定前に、他の入札参加者に対して入札価格又は工事費内訳書の内容を開示してはならない。」との規定に違反するなど、公共工事の入札及び契約手続について不正行為等を行った。

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.

Evidence pack

Original Osaka Prefecture announcement (Japanese)Archived source snapshot

Extracted at: 2026-04-25T20:39:07.161+00:00
Evidence checked: 2026-04-25T20:39:07.161+00:00
Archive captured: 2026-06-07T12:30:57.272+00:00

Show audit JSON

{
  "record": {
    "id": "8f5e2e7e-359c-4921-94a0-89cf4a571836",
    "url": "https://regbase.jp/en/enforcement/8f5e2e7e-359c-4921-94a0-89cf4a571836",
    "company_name_original": "岡本建設工業株式会社",
    "company_name_registry": "岡本建設工業株式会社",
    "corporate_number": "9120001027220",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "営業停止",
      "en": "Business Suspension"
    },
    "authority": {
      "ja": "大阪府",
      "en": "Osaka Prefecture"
    }
  },
  "entity_match": {
    "status": "confirmed",
    "confidence": 95,
    "method": "normalized_name_with_corporate_number",
    "method_label": "Normalized Japanese name matched to a company profile with Corporate Number",
    "notes": "Matched by normalized Japanese company name to an enriched company profile with a Corporate Number."
  },
  "review": {
    "status": "human_reviewed",
    "label": "Human reviewed"
  },
  "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/8f5e2e7e-359c-4921-94a0-89cf4a571836",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1093",
    "archiveUrl": "https://kiroku.today/view/667b0002123rg8zl",
    "archiveCapturedAt": "2026-06-07T12:30:57.272+00:00",
    "extractedAt": "2026-04-25T20:39:07.161+00:00",
    "translatedAt": "2026-05-01T08:05:54.444+00:00",
    "evidenceCheckedAt": "2026-04-25T20:39:07.161+00:00",
    "generatedAt": "2026-06-25T17:28:48.295Z"
  },
  "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: 岡本建設工業株式会社 Japanese original
Japanese name: 岡本建設工業株式会社
Corporate Number: 9120001027220
Registered address: 大阪府大阪市大正区南恩加島五丁目８番12号

See company profile →

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