On March 9, 2025, at the site of the auxiliary public road reconstruction project (National Route Collaboration) No. 19 (Koizumi No. 3 culvert work) in Azuma District, Higashi Azuma Town, Azuma District, workers including Worker A were used to install approximately 1.07 tons of U-shaped gutters. Worker A was assigned to operate a mobile crane with a lifting capacity of 2.9 tons without possessing a licensed crane operator's license or having completed the small mobile crane operation skills training, and there was no statutory exemption. As a result, violations of the Labor Safety and Health Regulations and the Crane Safety Regulations were identified, leading to a formal document submission. The Tochinojo Summary Court sentenced a fine on January 24, 2026, which was finalized.