Case of Violation of the Act on Elimination and Prevention of Involvement in Bid Rigging, etc. and Punishment of Acts that Harm the Fairness of Bidding, etc. by Employees, and Obstruction of Public Contract-Related Auction Bidding

In 2025, the Osaka District Public Prosecutors Office indicted a former Osaka Prefectural Government official and a construction company executive for violating the Act on Elimination and Prevention of Involvement in Bid Rigging and the Penal Code. The official leaked confidential bid information on public works projects, including those linked to the 2025 Osaka Expo, to the company. The firm then submitted winning bids, obstructing fair competition. The case exposed systemic vulnerabilities in public procurement oversight. Charges included bid rigging and obstruction of auction bidding under public contract law. The trial underscored the urgent need for stricter anti-corruption safeguards in local government procurement.

The Osaka District Court convicted both defendants. The former official received a 2-year prison sentence suspended for 3 years; the executive received 1 year and 6 months suspended for 3 years. The company was fined 5 million yen.

Whether the official's disclosure constituted “involvement in bid rigging” under the specific statute, and whether the leaked information directly impaired the fairness of the bidding process as required for the obstruction charge.

The ruling prompted nationwide reviews of local government internal controls and whistleblower protections. It fueled public demands for harsher penalties against public servants involved in bid rigging and led to revisions of compliance guidelines across the construction industry.