和工建設株式会社's former representative director and general affairs manager engaged in fraudulent activities by submitting false corporate and local corporate tax returns to Yakumo Tax Office, resulting in partial tax evasion. On April 15, 2026, the Hakodate District Court sentenced the company to a fine of 10 million yen, the former representative to 1 year and 2 months imprisonment (probation for 3 years), and the general affairs manager to 8 months imprisonment (probation for 3 years) for violations of the Corporate Tax Act and Local Corporate Tax Act. The sentences were finalized on April 20, 2026. This conduct falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act. As a result, Hokkaido issued a business suspension order from June 3 to June 9, 2026, prohibiting all business activities without restrictions on type, region, or project scope. Additionally, a business ban was imposed on the company's officers under Article 29-4, Paragraph 1 of the Construction Business Act, with the same scope and period as the suspension. The company is authorized to conduct construction work in the categories of earthwork, building, steel, paving, landscaping, water, and demolition. The address of the main office is 359-91 Imaizumi, Imaizumi Town, Esashi District, Soya, Hokkaido.