Business Suspension Records in Japan

光サービスの事業主は、建設工事により生じた産業廃棄物を自家製焼却炉で焼却したことにより起訴され、廃棄物の処理及び清掃に関する法律等に基づき、罰金20万円の略式命令を受け、その刑が確定した。

関東建設工業株式会社の元社員は、群馬県桐生市が令和４年１０月１９日に入札を執行した「桐生市新本庁舎建設工事」の入札に関し、偽計を用いて、公の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たとして、令和７年１２月２４日にさいたま地方裁判所から公契約関係競売等妨害罪により懲役１年（執行猶予３年）の判決を受け、その刑が確定している。 このことが建設業法第２８条第１項第２号に該当すると認められる。

当該建設業を営む者は、２０２５年日本国際博覧会の建設工事において、建設業法第３条第１項の規定に違反して同項の許可を受けないで請負代金が建設業法施行令第１条の２に定める金額以上となる建設工事を請け負った。

当該建設業を営む者は、２０２５年日本国際博覧会の建設工事において、建設業法第３条第１項の規定に違反して同項の許可を受けないで請負代金が建設業法施行令第１条の２に定める金額以上となる建設工事を請け負った。

当該建設業を営む者は、２０２５年日本国際博覧会の建設工事において、建設業法第３条第１項の規定に違反して同項の許可を受けないで請負代金が建設業法施行令第１条の２に定める金額以上となる建設工事を請け負った。

The company used PC steel bars of different specifications from those in the design documents during the Kamo River riverbed improvement project ordered by Toyama Prefecture, without reporting this to Toyama Prefecture, resulting in a significant defect in the construction. Additionally, the company submitted a false inspection certificate claiming the PC steel bars were in accordance with the design documents. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

Yamabe Motoyasu, the representative director of Hachibo Construction Co., Ltd., was found to have violated the Labor Standards Act by requiring workers at construction sites in Nara Prefecture to work overtime exceeding 40 hours per week and more than 8 hours per day excluding break time, from October 1, 2024, to March 31, 2025, despite no exemption applying to the company's operations. He was sentenced to a fine of 200,000 yen by the Katsuragi Summary Court on February 26, 2026, and the sentence was finalized. This conduct is recognized as corresponding to Item 3, Paragraph 1, Article 28 of the Construction Business Act.

Ogura Denki Service Ltd. violated the Construction Business Act by entering into subcontract agreements with entities operating without the necessary permits, knowing the circumstances, in private construction projects within Tokyo. Additionally, the company engaged in electrical work without the required permit, exceeding the amount specified in the Enforcement Order of the Act. These actions correspond to Article 28, Paragraph 1, Item 6; Paragraph 2, Item 2; and Paragraph 3 of the Construction Business Act.

Sansen Corporation violated Article 3, Paragraph 1 of the Construction Business Act by undertaking multiple private construction projects in Tokyo exceeding the amount specified in Enforcement Order Article 1-2, Paragraph 1, during a period when it did not hold the necessary license. This constitutes a violation of Article 28, Paragraph 2, Items 2 and 3 of the Construction Business Act.

The construction company violated Article 3, Paragraph 1 of the Construction Business Act by undertaking construction work with a contract amount exceeding the amount specified in Enforcement Order of the Construction Business Act, without obtaining the necessary permit for scaffolding and earthwork construction, in multiple private-sector projects.

Nanzan Kaihatsu Co., Ltd. was found to have submitted construction history documents and lists of technical personnel that contained false information when applying for management review from 2022 to 2024. Based on this, the company applied for bidding qualification with Okinawa Prefecture, the public works client. This is recognized as corresponding to the provisions of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

Konoan Construction Co., Ltd. was found to have submitted construction history documents and lists of technical personnel that contained false information when applying for the management review from 2022 to 2024. Based on this, the company applied for bid participation qualification with Okinawa Prefecture, the public works procurer. This is recognized as corresponding to the provisions of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

Fujiken Sekou Co., Ltd. was found to have submitted construction history documents and lists of technical personnel that contained false information when applying for the management review from 2022 to 2024. Based on this, the company applied for bid participation qualification with Okinawa Prefecture, the public works procurer. This is recognized as corresponding to the provisions of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The Executive Director of Koshin Kensetsu Kogyo Co., Ltd. provided a bribe of approximately 90,000 yen to a Urakawa town official in May 2025, under the pretext of receiving guidance on the estimated price of public works. On February 4, 2026, in Sapporo Summary Court, he was sentenced to a fine of 300,000 yen for the crime of bribery under Article 198 of the Penal Code, and the sentence was finalized on the same day. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

K.K. S.H. Kogyo contracted for foundation work worth 130,273,000 yen for the HACCP factory warehouse expansion project from October 2024 to March 2025 without possessing the permits for civil engineering or earthwork construction. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The former representative director of Shinko Jitsugyo Co., Ltd. was convicted of obstructing fair public bidding by using fraudulent means to interfere with the integrity of public contracts related to two bidding processes conducted by Omachi City, Nagano Prefecture, on August 21 and December 11 of Reiwa 6 (2024). On October 16 of Reiwa 7 (2025), the Nagano District Court sentenced him to one year in prison, with a three-year suspended sentence, for violating the Public Contract Act. This is deemed to correspond to items 2 and 3 of Article 28, Paragraph 1 of the Construction Business Act.

Officers of Daruma Shoten Ltd. were convicted of violating the Waste Management and Public Cleansing Law (Law No. 137 of 1970) and sentenced to a fine of 300,000 yen by Kakogawa Summary Court, with the sentence finalized on July 14, 2023. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Officers of Nishiyo Kogyo Co., Ltd. were convicted of violating the Waste Management and Public Cleansing Law (Law No. 137 of 1970) and sentenced to a fine of 400,000 yen by the Himeji Summary Court. The sentence was finalized on July 13, 2024. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

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.

An employee of Kobayashi Construction Co., Ltd. was convicted of obstructing public contract-related bidding processes under the crime of obstruction of public contract proceedings, by the Chiba District Court on January 15, 2026, receiving a sentence of one year in prison (with a three-year suspension). The sentence was finalized on January 30, 2026. This constitutes a violation of Article 28, Paragraph 1, Items 2 and 3 of the Act against Unjustifiable Premiums and Misleading Representations.

Futaba Manufacturing Co., Ltd. was involved in a tank accessory inspection equipment construction project in Oga City, Akita Prefecture, where on May 29, 2023, a generator's oil pan fell during lifting with a crane and collided with a worker inside the tank, resulting in death. The company failed to implement measures to prevent falling objects, such as setting up restricted entry zones, despite the risk of falling causing danger to workers. Although the oil pan was previously unfastened from the generator, it was not securely removed, and the company neglected its duty to prevent falling, leading to the oil pan dropping and causing the worker's death. On September 18, 2025, the Oga Summary Court sentenced the company to a fine of 300,000 yen and one employee to a fine of 500,000 yen for violations of the Industrial Safety and Health Act and for occupational negligence resulting in death. This case is recognized as applicable under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Kabushiki Kaisha Hokuei Kensetsu did not assign a chief technical officer to a private construction project in Hachioji City, Tokyo, contracted on April 30, Reiwa 6 (2024). This violates Article 26, Paragraph 1 of the Building Business Act and falls under Item 2, Paragraph 1, Article 28 of the same Act, making it subject to a business suspension order under Paragraph 3 of that article.

The construction company above entered into subcontract agreements exceeding the amount specified in Enforcement Order for the Construction Business Act, with persons not holding a construction business license. This constitutes a violation of Article 28, Paragraph 1, Item 6 of the Construction Business Act.

The company was prosecuted by the Osaka District Public Prosecutors Office for conducting illegal overtime work beyond the extended hours under the labor-management agreement based on Article 36 of the Labor Standards Act, for two workers in the headquarters construction department. The company and two officers were issued a summary order of a 300,000 yen fine on December 4, 2024. This is recognized as corresponding to Item 3, Paragraph 1, Article 28 of the Construction Business Act.

The director of Shiose Co., Ltd. disposed of approximately 6.2 tons of construction and industrial waste, including debris and waste plastics, at a construction site in Koshigaya City, Saitama Prefecture, between November 27 and December 4, Reiwa 6, without the statutory exemption. As a result, a fine of 500,000 yen was finalized for violating the Waste Management and Public Cleansing Law (Koshigaya Summary Court, June 4, Reiwa 7). This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Construction company Matsuo Painting Co., Ltd. operated construction business without a license. In a public works project commissioned by Fukuoka Prefecture, the company altered a copy of a permit notification issued to another party, creating a duplicate that appeared to be an authentic permit notification in form and appearance. The company presented this to a primary subcontractor, leading to the mistaken belief that it was a licensed contractor. On June 23, 2022, the company entered into a subcontract agreement exceeding the scope of minor construction work as defined by the Enforcement Order of the Act. This conduct violates Article 3, Paragraph 1 of the Construction Business Act and falls under Item 2 of Paragraph 2 of Article 28 of the same Act.

The construction company failed to take necessary measures to prevent hazards related to fall risks at a Tokyo-based air conditioning installation site where they were the prime contractor. As a result, on March 10, 2022, a worker (an employee of a subcontractor) fell from a height and subsequently died. The company and supervising engineers received summary fines from the Tokyo Summary Court on March 19, 2025, for violations of the Industrial Safety and Health Act and for professional negligence resulting in death, and these penalties were finalized. This is recognized as corresponding to Item 3, Paragraph 1, Article 28 of the Construction Business Act.

The person engaged in the construction industry contracted construction work for the 2025 Japan International Exposition without the required permit, in violation of Article 3, Paragraph 1 of the Construction Business Act, and the contract amount exceeded the amount specified in Enforcement Order of the Construction Business Act, Article 1-2.

The person engaged in the construction industry contracted construction work for the 2025 Japan International Exposition without the required permit, in violation of Article 3, Paragraph 1 of the Construction Business Act, and the contract amount exceeded the amount specified in Enforcement Ordinance of the Construction Business Act, Article 1-2.

A person engaged in the construction industry contracted construction work for the 2025 Japan International Expo without the required permit, in violation of Article 3, Paragraph 1 of the Construction Business Act, and the contract amount exceeded the amount specified in the Enforcement Order of the Construction Business Act, without obtaining the necessary authorization.

An employee of Paruto Corporation was fined by the Tokushima Summary Court on September 19, 2025, for violations of the Waste Management and Public Cleansing Law related to the company's operations, and the sentence was finalized on October 7, 2025. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

The former representative director of Hirose Corporation was convicted of obstructing bidding in a public contract auction (Article 96-6, Paragraph 1 of the Penal Code) and received a sentence of one year in prison (with a three-year probation) from the Oita District Court on September 29, 2025, with the sentence finalized. This constitutes a violation of Article 28, Paragraph 3 of the Construction Business Act (Item 3, Paragraph 1 of the same article).

Senden Corporation repeatedly undertook construction work that does not qualify as minor construction work specified in the proviso of Article 3, Paragraph 1 of the Construction Business Act, despite not having obtained a construction business license as required by the same law. This constitutes a violation of Item 2, Paragraph 2, Article 28 of the Construction Business Act.

Yoshioka Corporation engaged in construction work without obtaining the construction business license required under Article 3, Paragraph 1 of the Construction Business Act, other than minor construction work specified by government ordinance in the proviso of that paragraph. This constitutes a violation of Article 28, Paragraph 2, Item 2 of the Construction Business Act. Additionally, for a new factory construction project in Tenri City, Nara Prefecture, the company entered into subcontracting agreements exceeding the amount specified by government ordinance in the Construction Business Act without holding the specific construction business license for building construction, which constitutes a violation of Article 28, Paragraph 1, Item 2 of the same Act.

Kawada Juken Co., Ltd. succeeded to the status of a construction business operator under Article 17-2, Paragraph 1 of the Construction Business Act. In a construction project within Misato Town, it entered into a subcontracting agreement exceeding the amount specified by government ordinance under Article 3, Paragraph 1, Item 2 of the Act without obtaining a specific construction business license for building construction. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Act. Additionally, the project was contracted in a lump sum with the subcontractor in violation of Article 22, Paragraph 1 of the Act, which constitutes a violation of Article 28, Paragraph 1, Item 4 of the Act.

The representative director of Reiwa Corporation unlawfully dumped approximately 6.2 tons of industrial waste, including debris and waste plastics, at a construction site in Koshigaya City, Saitama Prefecture, between November 27 and December 4, 2024, without any statutory exemption. As a result, the company was fined 1 million yen and the representative director was fined 500,000 yen for violations of the Waste Management and Public Cleansing Law. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Urawa Kogyo Co., Ltd. was issued a summary order on March 7, 2025, by the Okinawa Summary Court for violations of the Industrial Safety and Health Act and for professional negligence resulting in death. The violations occurred during the assembly of scaffolding over 5 meters high at a private renovation site in Okinawa City, Okinawa Prefecture, on July 4, 2024. The company failed to monitor the progress of workers' tasks and did not perform the duties of the scaffolding supervisor. Additionally, it neglected the duty to prevent electric shock accidents by installing protective pipes on high-voltage lines, failed to take necessary measures, and did not monitor the work progress. As a result, the company was fined 200,000 yen (corporate) and the individual was fined 500,000 yen, which is recognized as falling under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Take Corporation used an IC card registered under the former representative's name to participate in the bid for the construction project 'Traffic Safety Repair Work 07-98-21' ordered by the Tsuruga Civil Engineering Office, Reinan Promotion Bureau, Fukui Prefecture, despite having changed the representative. Additionally, the company listed the former representative's name in the bid qualification confirmation documents and the construction contract, and proceeded with the bidding and contract procedures. This is recognized as corresponding to Article 28, Paragraph 1, Item 2 of the Building Business Act.

The construction company violated Article 26, Paragraph 2 of the Construction Business Act by appointing a person without an employment relationship (direct and permanent) as a supervising engineer to undertake construction work. This is deemed to fall under Item 2 of Paragraph 1 of Article 28 of the Construction Business Act.

Oharakoumuten Co., Ltd. and its sales manager were convicted on August 29, 2025, by the Nagoya District Court for violations of the Corporation Tax Act and the Local Corporation Tax Act. The company was fined 8 million yen, and the sales manager was sentenced to one year in prison (with a three-year probation) and fined 3.5 million yen. The sentence has been finalized. This constitutes a violation of Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Nishi-Kei Kogyo Co., Ltd. submitted applications for each of the management review dates of September 30, 2022, September 30, 2023, and September 30, 2024, listing individuals who are responsible for business management at other companies on the technical staff roster, and submitted the resulting comprehensive evaluation notices to public project clients, who used these results for qualification screening. This is recognized as corresponding to Article 28, Paragraph 1, Item 2 of the Construction Business Act.

Makino Komuten Co., Ltd. contracted construction work in Tenri City, Nara Prefecture, as a subcontractor without holding the construction business license specified in Article 3, Paragraph 1 of the Construction Business Act for general construction work. This is recognized as falling under Item 6 of Article 28, Paragraph 1 of the Construction Business Act. Additionally, the prime contractor did not possess the specified construction business license as defined in Item 2 of Article 3, Paragraph 1 of the Act, yet entered into a construction contract exceeding the amount specified in the government ordinance for construction work with the subcontractor. This is recognized as falling under Item 7 of Article 28, Paragraph 1 of the Act.

The construction company contracted subcontractors beyond the scope of minor construction work defined under the Enforcement Order of the Construction Business Act without obtaining the permit required by Article 3, Paragraph 1 of the Construction Business Act, in relation to general construction, scaffolding, earthwork, and concrete work in Fukushima and Ibaraki Prefectures. This is deemed to fall under Item 6, Paragraph 1, Article 28 of the same Act.

SoeNe Corporation violated Article 3, Paragraph 1 of the Construction Business Act by undertaking electrical construction work exceeding the amount specified in Enforcement Order Article 1-2, Paragraph 1, without holding the necessary license. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the Construction Business Act.

Shioyume Soken Corporation engaged in private construction work within Tokyo exceeding the specified amount without holding the permit required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Glassphere Japan Inc. assigned dispatched workers without a direct employment relationship as chief engineers to multiple construction projects outside of construction work in Matsubara City, Osaka Prefecture, from July 2022 to March 2024. This violates Article 26, Paragraph 1, and falls under Items 2 and 3 of Article 28 of the Construction Business Act.

Toto Business Corporation engaged in multiple private construction projects within Tokyo exceeding the amount specified in the Enforcement Order of the Construction Business Act without possessing the required license under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Office Nexus Corporation engaged in construction work exceeding the specified amount without holding the license required under Article 3, Paragraph 1 of the Construction Business Act, for private projects in Suginami and Arakawa wards, Tokyo. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Renew Pacific Corporation engaged in private construction work within Tokyo exceeding the specified amount without holding the license required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

EYL Corporation engaged in multiple private construction projects within Tokyo exceeding the specified monetary threshold without possessing the license required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Kabu-shiki Kaisha Plus 1 submitted false information by overstating completed construction amounts in the management evaluation application and attached documents during the management evaluation on May 31, 2024, and May 31, 2025. They also submitted the management evaluation result notices based on these applications to Fukuoka Prefecture on October 8, 2024, and October 16, 2025, respectively, to participate in the construction bidding qualification examinations for fiscal years 2027 and 2028. These actions constitute violations of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The person engaged in the construction industry contracted a construction project in Osaka City with a contract amount exceeding the amount specified in the Enforcement Order of the Construction Business Act without obtaining the required permit, in violation of Article 3, Paragraph 1 of the Construction Business Act.

Matsumoto Kawaguchi Kintetsu Corporation engaged in construction work without the permit for machinery and equipment installation work as required by Article 3, Paragraph 1 of the Construction Business Act, in violation of that paragraph. The work contracted does not fall under the minor construction work specified in the proviso of that paragraph. This constitutes a violation of Item 2, Paragraph 1, Article 28 of the Construction Business Act.

Yoshida Tosou Satoshi Yoshida engaged in multiple construction projects without obtaining the construction business license required under Article 3, Paragraph 1 of the Construction Business Act, other than minor construction work specified by government ordinance in the proviso of that paragraph. This is recognized as corresponding to Item 2, Paragraph 2 of Article 28 of the Act.

K.K. T.K. Kogyo engaged in private demolition work in Higashiosaka City, Osaka Prefecture, where the prime contractor, despite not holding the construction business license specified in Article 3, Paragraph 1 of the Building Business Act, entered into a construction contract with the subcontractor for construction work other than minor construction work as defined by government ordinance in the proviso of the same paragraph. This is deemed to fall under Item 6, Paragraph 1, Article 28 of the Act.

The construction company engaged in fraudulent conduct related to the bidding and contract procedures for a project ordered by Minoh City, including modifying and falsifying the review date on the 'Management Scale Evaluation Result Notification and Comprehensive Evaluation Value Notification' prepared by the Governor of Osaka Prefecture.

Yugen Kaisha Hashida Construction falsely reported that security personnel were deployed for a project commissioned by Kuroshio Town, despite not having deployed any, thereby unjustly inflating personnel costs and making claims accordingly.

A former director of Abe Construction Co., Ltd. was involved in the fraudulent receipt of subsidies related to the Small and Medium Enterprise Group Facility Restoration Subsidy for a seafood processing company by creating false contracts and estimates and inflating construction costs. On September 16, 2025, the Sendai District Court sentenced him to one year in prison (with a three-year suspension of sentence) for violating the Act on Proper Execution of Budget related to Subsidies, etc. This constitutes a violation of Article 28, Paragraph 1, Items 2 and 3 of the Act.

Yoneyama Kiso Kogyo Co., Ltd. was found to have burned approximately 34.2 kilograms of waste wood and other materials on its premises in Narita City on October 3, 2019, between 9:00 and 9:57 a.m., without a statutory exemption. Based on this fact, the Sakura Summary Court issued a summary order on September 8, 2020, under case number Reiwa 2 (i) No. 200, imposing a fine of 500,000 yen for violations of the Waste Management and Public Cleansing Law. This is recognized as corresponding to Article 28, Paragraph 1, Item 3, and Paragraph 3 of the law.

The representative director of Suzuki Construction Co., Ltd. buried approximately 12.93 tons of concrete waste on the premises of Izumo Taisha Hakodate Church Chiba Sogo Kokukyo in Wakaba-ku, Chiba City, between late July and early August of Reiwa 1 (2019), without any statutory exemption. Based on this fact, the Chiba District Court sentenced the corporation to a fine of 5 million yen and the representative director to two years of imprisonment (with a three-year probation) on May 27, Reiwa 4 (2022), for violations of the Waste Management and Public Cleansing Law. It is recognized that this constitutes a violation under Article 28, Paragraph 1, Item 3, and Paragraph 3 of the same law.

Wall Corporation, its representative director, and one employee received summary orders on June 13, 2025, from Nagoya Summary Court for violating the Act on Specified Commercial Transactions (Law No. 57 of 1976). The corporation was fined 1 million yen, and the representative director and the employee were each fined 500,000 yen. The penalties have been finalized. This corresponds to Article 28, Paragraph 1, Item 3 of the Building Business Act.

Kabu-shiki Kaisha Fukujyu Kensetsu concealed income by recording fictitious outsourcing expenses over three fiscal years from September 1, 2020, to August 31, 2023, thereby avoiding corporate and local corporate taxes. On October 17, 2025, the Nara District Court sentenced the company to fines for violations of the Corporate Tax Act and the Local Corporate Tax Act, and the sentence was finalized. This is recognized as applicable under Article 28, Paragraph 1, Item 3 of the law.

The former representative director and former director of the company were convicted of violating the Construction Business Act by conspiring with a city employee to obtain confidential information about the estimated price for a restricted competitive bidding process for a plumbing construction project in Ichinoseki City. They used this information to have the company bid and win the contract through fraudulent means, thereby impairing the fairness of the public bidding process. The former representative director was sentenced to 10 months in prison with a three-year suspension, and the former director to 1 year in prison with a three-year suspension, with their sentences finalized. This conduct is recognized as corresponding to items 2 and 3 of Article 28, Paragraph 1 of the Construction Business Act.

Kokudo Kensetsu Co., Ltd. entered into a construction contract exceeding the amount specified in the government ordinance with the prime contractor for a factory new construction project in Nara City, Nara Prefecture, despite not holding the permit for a specified construction business as stipulated in Article 3, Paragraph 1, Item 2 of the Act. This is recognized as corresponding to Item 7 of Article 28, Paragraph 1 of the Act.

K-Next Corporation contracted for construction work exceeding the scope of minor construction as defined by the Enforcement Order of the Construction Business Act, in violation of Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Item 2, Paragraph 2, Article 28 of the Construction Business Act.

Conducto.r. engaged in multiple private construction projects exceeding the amount specified in the Enforcement Order for the Construction Business Act without having the permit required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the Construction Business Act.

Katsushika Garage Co., Ltd. engaged in multiple private construction projects exceeding the amount specified in the Enforcement Order for the Construction Business Act without holding the license required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Items 2 and 3 of the Construction Business Act.

Asia Corporation engaged in private construction work within Tokyo exceeding the amount specified in the Enforcement Order of the Construction Business Act without holding the required license under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Kanehira Limited Liability Company entered into a subcontract agreement exceeding the amount specified in the Enforcement Order of the Construction Business Act without holding a specific construction business license in public works within Tokyo, violating Article 3, Paragraph 1, Item 2 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 1, Item 2 and Paragraph 3 of the same Act.

Murakami Corporation engaged in multiple private construction projects exceeding the amount specified in the Enforcement Order for the Construction Business Act without holding the permit required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Gouriki Corporation entered into subcontracting contracts exceeding the specified amount with entities not holding a construction business license under Article 3, Paragraph 1 of the Construction Business Act, in multiple private projects. This constitutes a violation of Article 28, Paragraph 1, Item 6 and Paragraph 3 of the Construction Business Act.

Tokyo Gas Communications Corporation assigned individuals who do not meet qualification requirements as supervising engineers at multiple private construction sites in Tokyo, in violation of Article 26, Paragraph 5 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 1, Item 2 and Paragraph 3 of the same Act.

Kartos Hongo Co., Ltd. violated Article 26, Paragraph 1 of the Building Business Act by assigning an unqualified person as the chief engineer at a construction site ordered by Fujieda City. This is considered to fall under Item 2 of Paragraph 1 of Article 28 of the same Act, and also to be subject to Paragraph 3 of Article 28.

Yomachi Construction Co., Ltd. violated Article 26, Paragraph 1 of the Building Business Act by assigning individuals without a direct and permanent employment relationship as chief engineers to two projects commissioned by Mihara Village.

Kuhou Kogyo Co., Ltd. was the primary subcontractor responsible for excavation work at a new condominium construction site in Fukuoka City. An employee of the company, who oversees safety management and supervises workers, failed to perform the duties required of a work supervisor under the law, such as deciding on work methods and directly supervising work, on June 15, 2023. This resulted in a fatal accident involving a worker. On June 18, 2025, the Fukuoka Summary Court sentenced the company to a fine of 200,000 yen for violations of the Industrial Safety and Health Act, and the employee to a fine of 500,000 yen for violations of the same law and for professional negligence resulting in death. The case falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

A, who was the representative director and overall manager of the construction company at the time, concealed income by recording fictitious subcontracting expenses and filed false corporate and local corporate tax returns with the Suita Tax Office over three fiscal years, causing the statutory deadlines to pass and avoiding approximately 90.3 million yen in corporate tax and approximately 8.2 million yen in local corporate tax. Additionally, A recorded fictitious taxable purchases over three tax periods, filed false consumption and local consumption tax returns, and avoided paying approximately 32 million yen in consumption tax and approximately 9 million yen in local consumption tax, receiving a total refund of approximately 2,134,700 yen through false claims for intermediate tax refunds and transfer discounts. A was sentenced to 1 year and 6 months imprisonment with a 3-year suspended sentence for violations of the Act against Unjustifiable Premiums and Misleading Representations, the Act on Regulation of Commercial Transactions, the Act against Unjustifiable Premiums and Misleading Representations, and the Local Tax Act. The sentence was finalized on December 12, Reiwa 6, and the construction company was fined 34 million yen, with the fine also finalized on the same day.

Erepa Corporation contracted construction work without the required license, violating Article 3, Paragraph 1 of the Construction Business Act, for projects with contract amounts exceeding the threshold specified in the Enforcement Order of the Construction Business Act.

The former representative director of Haramoto Industrial Co., Ltd. participated in a competitive bidding process for electrical work ordered by Sasa Town, and, through a former employee of Horiuchi-gumi via the former mayor of Sasa Town, was informed of a price close to the minimum limit price, enabling the company to win the bid. On July 14, 2025, the Nagasaki District Court sentenced him to one year of imprisonment with a three-year suspended sentence under Articles 96-6(1) and 60 of the Penal Code, and the sentence was finalized on July 29, 2025. This is recognized as corresponding to Item 3 of Paragraph 1 of Article 28 of the Construction Business Act.

Daiwa Giken Co., Ltd. received an order for the 'Employee Dormitory Air Conditioner Installation Cold Climate Specification Update Work' (excluding tax 13.5 million yen) from a construction company despite not holding a construction business license for piping work. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The former representative director of Kabushiki Kaisha Sanryu was involved in a bid-rigging scheme for a construction project ordered by Sasa Town. He obtained information about the minimum bid price through a former employee of Horiuchi-gumi via the former mayor of Sasa Town, enabling the company to win the bid. On July 14, 2025, he was sentenced to one year of imprisonment with a three-year probation by the Nagasaki District Court under Articles 96-6(1) and 60 of the Penal Code, and the sentence was finalized on the same day. This conduct is recognized as falling under Item 3 of Article 28(1) of the Construction Business Act.

The person engaged in the construction industry contracted construction work for the 2025 Japan International Expo without the required permit, in violation of Article 3, Paragraph 1 of the Construction Business Act, and the contract amount exceeded the amount specified in Enforcement Order for the Construction Business Act, Article 1-2.

A shareholder holding more than 5% of issued shares of Yushin Construction Co., Ltd. burned approximately 99.7 kilograms of wood waste on the company's premises in Inno, Asahi City, Chiba Prefecture, around 10:00 a.m. on October 2, 2019, without a legal exemption. Based on this fact, the Sawara Summary Court issued a summary order on April 7, 2020, under case number Reiwa 2 (i) No. 4, sentencing the shareholder to a fine of 300,000 yen for violating the Waste Management and Public Cleansing Law. This is recognized as applicable under Article 28, Paragraph 1, Item 3 and Paragraph 3 of the law.

Iida Komuten engaged in private construction work within Nara City, Nara Prefecture, without obtaining a construction business license as required by Article 3, Paragraph 1 of the Construction Business Act. This is recognized as corresponding to Item 2, Paragraph 2 of Article 28 of the Construction Business Act.

Seike Shoji Co., Ltd. engaged in private construction work within Higashi-Osaka City, Osaka Prefecture, without obtaining a construction business license as required by Article 3, Paragraph 1 of the Construction Business Act. The work involved projects other than minor construction work specified in the proviso of Article 3 of the Act and Article 1-2, Paragraph 1 of the Enforcement Order of the Construction Business Act. This is recognized as corresponding to Item 2, Paragraph 2 of Article 28 of the Construction Business Act.

The former representative director of Tafu Energy Corporation was involved in an incident on November 6, Reiwa 6 (2024) at a road paving site in Kushiro City, Hokkaido, where workers were allowed into a hazardous area near a moving freight vehicle, resulting in one worker being struck and killed by the vehicle as it backed up. The corporation was fined 200,000 yen for violations of the Industrial Safety and Health Act. The former representative director was convicted of violations of the same act and negligent manslaughter by motor vehicle, receiving a one-year prison sentence (with a three-year suspended sentence), which was finalized on May 30, Reiwa 7 (2025). This incident falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Shiojiri Suiken Co., Ltd. submitted applications containing false statements to inflate the completed construction costs of waterworks projects during management review on September 30, 2022, and received review results. Using these results, the company applied for bid participation qualifications with Shiojiri City and obtained construction bid qualifications for fiscal years 2023 and 2024. Additionally, during management review on September 30, 2023, the company again submitted applications with false statements and obtained review results. Using these, the company applied for bid participation qualifications with Nagano Prefecture and Shiojiri City and obtained construction bid qualifications for fiscal years 2024, 2025, and 2026. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The construction company violated Article 26, Paragraph 1 of the Construction Business Act by failing to assign qualified chief engineers to multiple private-sector projects in Hiroshima, Akita, and Fukushima prefectures.

Shoyo Densetsu Corporation received an order for air conditioner installation work at Jōtaku Elementary School and nine other schools' health rooms, amounting to 7,098,000 yen excluding tax, issued by the Sapporo City Housing Management Public Corporation, despite not holding a construction business license for plumbing work. This constitutes a violation of Article 28, Paragraph 1, Item 2 of the Construction Business Act.

A former employee of Horiuchi Corporation provided information about the lowest bid price to others during a competitive bidding process for construction work ordered by Sasa Town. The employee was convicted of violating criminal law and received a sentence of 1 year and 6 months imprisonment, with a 3-year suspension, which was finalized on July 25 of the Reiwa 7 year. This conduct is deemed to fall under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

The director of Yugen Kaisha Ito Kenzai burned approximately 12 cubic meters of waste materials on the company's premises without a statutory exemption on June 15, 2022, between 1:00 PM and 4:00 PM. Based on this fact, the Chiba Summary Court issued a summary order on April 18, 2023, under case number Reiwa 5 (i) No. 30276, sentencing the director to a fine of 700,000 yen for violations of the Waste Management and Public Cleansing Law. This is recognized as corresponding to Article 28, Paragraph 1, Item 3, and Paragraph 3 of the same law.

The representative director of Hiruma Kogyo Co., Ltd. burned approximately 0.1183 cubic meters of waste wood and other materials on the company's premises on November 4, 2018, from around 7:30 a.m. to 12:05 p.m., without a statutory exemption. Based on this fact, the Chiba Summary Court issued a summary order on April 3, 2019, under case number 2019 (i) No. 30238, sentencing the corporation to a fine of 500,000 yen and the representative director to a fine of 300,000 yen for violations of the Waste Management and Public Cleansing Law. This is recognized as corresponding to Article 28, Paragraph 1, Item 3, and Paragraph 3 of the same law.

Okaisha Densetsu Kogyo Co., Ltd. entered into a subcontract agreement exceeding the amount specified in the Cabinet Order under the Act on Regulation of Construction Business, without holding the permit for a specified construction business as stipulated in Article 3, Paragraph 1, Item 2 of the Construction Business Act, in relation to a new factory construction project in Nara City, Nara Prefecture. This is recognized as falling under Article 28, Paragraph 1, Item 2 of the Construction Business Act.

The former representative director of Kubo Construction was convicted of obstructing fair public procurement processes under the Act against Unjustifiable Premiums and Misleading Representations, related to two construction projects in Ehime Prefecture. He received confidential information from a former Ehime Prefecture official regarding direct construction costs and survey standard prices, which he used to secure the contracts through fraudulent means. He was sentenced to 1 year and 6 months in prison, with a 3-year suspended sentence, and the sentence was finalized. This conduct falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Aya Nakai engaged in private construction work within Tokyo exceeding the amount specified in the Construction Business Act Enforcement Order without holding the permit required by Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2 and Paragraph 3 of the same Act.

ECODA Corporation engaged in multiple private construction projects within Tokyo exceeding the statutory amount without holding the license required under Article 3, Paragraph 1 of the Construction Business Act. This constitutes a violation of Article 28, Paragraph 2, Item 2, and Paragraph 3 of the same Act.

Earth Environment Development engaged in private construction work within Katsuragi City, Nara Prefecture, without obtaining a construction business license as required by Article 3, Paragraph 1 of the Construction Business Act. This work was outside the scope of minor construction work specified in the proviso of Article 3 of the Act and Article 1-2, Paragraph 1 of the Enforcement Order of the Construction Business Act. This is recognized as corresponding to Item 2 of Paragraph 2 of Article 28 of the Construction Business Act.

IHI Transport Machinery Co., Ltd. and other businesses jointly restricted competition in the fields of specific underground PS installation work and specific elevator-type PS installation work by determining supply schedulers and enabling them to supply, in order to prevent a decline in supply prices. This conduct was deemed to violate the Act against Unjustifiable Premiums and Misleading Representations and the Antimonopoly Act, specifically constituting an unfair trade restriction under Article 2, Paragraph 6 of the Act, and was found to violate Article 3 of the same law. However, because the company self-reported the violation to the Fair Trade Commission, the surcharge reduction system was applied, and on March 24, Reiwa 7 (2025), the Fair Trade Commission issued a notification based on Article 7-4, Paragraph 7 of the Act. This conduct is recognized as corresponding to Items 2 and 3 of Article 28, Paragraph 1 of the Construction Business Act.

The construction company, in cooperation with other businesses, decided the supply schedule for specific elevator-type PS installation work after June 29, 2017, to prevent a decline in supply prices. By doing so, it effectively restricted competition in the construction transaction field, contrary to public interest. The Fair Trade Commission determined this violated Article 3 of the Act against Unjustifiable Premiums and Misleading Representations, and issued an order for exclusion and a surcharge payment. This is recognized as corresponding to Items 2 and 3 of Paragraph 1, Article 28 of the Construction Business Act.

The construction companies jointly engaged in specific elevator-type PS installation work after July 1, 2018, to prevent a decline in supply prices and to determine supply予定者, thereby restricting competition in the construction transaction field contrary to public interest. This was recognized as a violation of Article 3 of the Act against Unjustifiable Premiums and Misleading Representations (Law No. 54 of 1947), and an exclusion order was issued by the Fair Trade Commission. It is deemed to correspond to Items 2 and 3 of Paragraph 1, Article 28 of the Construction Business Act.

Nissei Corporation, in cooperation with other businesses, restricted competition in the field of specific underground PS installation construction by determining supply schedulers and enabling them to supply, in order to prevent a decline in supply prices. This conduct contravened the Act against Unjustifiable Premiums and Misleading Representations and violated Article 3 of the Act. On March 24, 2025, the Fair Trade Commission issued an order for corrective measures and a surcharge payment order. This conduct is recognized as corresponding to items 2 and 3 of Paragraph 1, Article 28 of the Construction Business Act.