Maeda Construction Co., Ltd. was involved in an incident on September 30, Reiwa 6 (2024), at the Ariake 6 Line crossing pipe replacement site in Azumacho, Shumushu Village, Tomamae District, where a worker was killed after being caught between a shovel bucket and a vibratory roller while operating a shovel. The company failed to prohibit workers from entering areas where contact with the operating shovel could pose a danger, such as by displaying prohibitory signs or other methods, and did not take necessary measures to prevent worker hazards. This constitutes a violation of Article 20, Item 1 of the Industrial Safety and Health Act. The company received a summary order of fine from the Rumoi Summary Court, and the penalty was finalized on September 27, Reiwa 7 (2025). This violation falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act.