Safety Alert for Supervisors: 3/23/26

Incident summary A crew member suffered fatal injuries at the bottom of a trench when a quick coupler for an excavator bucket failed, causing the bucket to detach from the boom and crush him. What happened A two-person work crew was installing pipes at the bottom of a 9-foot-deep trench. One of the staff members had descended into the hole so he could attach pipes that were already in the excavation. The staffer in the trench had also positioned himself directly underneath the excavator so he could act as a spotter for the operator of the large machine. After digging out another section of the trench, the excavator operator used the controls to curl the bucket at the end of the boom. Without warning, the bucket detached from the excavator’s quick coupler and landed on the employee in the trench. The excavator operator dialed 9-1-1 and used a chain attached to the boom on the excavator to pull the bucket off the victim. By the time emergency responders arrived, however, the 67-year- old man at the bottom of the trench was already dead from his severe blunt force injuries. Findings The quick coupler that unexpectedly detached from the boom of the excavator had recently been repaired. However, no one had verified that the repair had been done properly. In addition, the worker operating the excavator didn’t inspect the equipment prior to the job. An inspection might have revealed that the quick coupler was broken – before it catastrophically failed and caused a fatal injury. Furthermore, the staff member at the bottom of the trench shouldn’t have positioned himself directly underneath the swing radius of the excavator’s boom. No one inspected machine prior to job; one man dead Worker crushed when excavator bucket detaches from boom You make the call: Supervisor didn’t know staffer was violating work rule “ W e have a rule that forbids employees from handling potentially explosive materials,” said George, the supervisor. “Unfortunately, in this case, one of our crew members disobeyed our work rule.” “Exactly,” replied Tammy, the compliance officer. “Plus, our safety regulations prohibit staffers from working with explosives if they haven’t been trained. You had an untrained man handling explosives, so I’m citing you.” “After a supervisor for a different contract crew asked our staffer to help with a task,” said George, “our guy held a pipe that contained explosives for a couple of minutes. And he played no role in the explosion that led to your inspection.” Doesn’t matter “It doesn’t matter whether your worker played a role in the incident,” said Tammy. “He shouldn’t have been handling explosives.” “Our man was trained not to handle explosives and to move a safe distance away from them,” said George. “However, like I said, he disregarded our policy on working with explosives. But we couldn’t have known about his rule violation because he was holding the pipe for just a couple of minutes, and his supervisor didn’t see him because the supervisor was in another location at the time of the transgression.” “You can’t dodge the fine by claiming ignorance of the violation,” said Tammy. Weren’t even aware “You’re trying to cite us for an infraction we weren’t even aware of,” said George. “Plus, you can’t penalize us for an alleged offense of our own work rule. We’ll fight your citation.” Did the company win? 2 Safety News Employee dead because supervisors kept broken equipment in service. 2 Quick Ideas Staff members handling repetitive tasks should perform hand exercises. 3 Legal Developments Three men suffer fatal injuries after high wind knocks over aerial lift. 3 Horror Stories Worker trapped in cab of tractor when overhead line lands on his vehicle. 4 Tailgate Talk Why falls through floor openings cause some of the most severe injuries. In this issue ■ Make your call, then go to page 3 for the court’s ruling. March 23, 2026 SafetyAlert FOR SUPERVISORS The No. 1 source of actionable information to help supervisors keep their people safe Including: Supervisor’s Safety Toolbox