The industry spent the third week of June talking about trench safety. Two workers in Los Angeles County didn’t make it through it. Cal-OSHA confirmed it’s investigating two trench-collapse fatalities even as contractors across the state ran toolbox talks and rescue demonstrations for Trench Safety Month. The timing is grim, and it’s the whole point.
A stand-down week with a body count
The National Utility Contractors Association held its annual Trench Safety Stand Down from June 15 to 19, with training sessions, seminars, and live trench-rescue demos at hundreds of jobsites nationwide. Cal-OSHA used the week to remind employers, again, that protective systems aren’t optional. Sloping the walls back, shoring them with hydraulic supports, or dropping in a trench box: federal rules require one of them in any excavation five feet deep or deeper, and a competent person has to inspect the trench before anyone goes in.
None of this is new guidance. That’s what makes the LA deaths land hard. A cave-in happens in seconds, and a cubic yard of soil weighs about as much as a small car, so a worker buried to the waist can’t self-rescue and often can’t be dug out in time. The engineering is settled. The compliance isn’t.
The enforcement record tells the story
Cal-OSHA issued roughly 90 trench-safety violations tied to worker injuries and fatalities between 2021 and 2025. Several were classified as willful, the agency’s term for an employer that knew the rule and skipped it anyway. Willful citations carry the heaviest penalties OSHA can levy, and they’re a tell: these aren’t accidents of ignorance, they’re decisions to save the time it takes to set up a shield.
The economics behind those decisions are ugly but real. Renting and moving a trench box, or bringing in a competent person to re-inspect after rain, costs schedule on a utility job already running thin. A crew under deadline pressure on a residential service line is exactly the profile that shows up in the fatality reports. Small contractors, shallow-but-not-shallow-enough trenches, one more connection before the end of the day.
Enforcement campaigns help at the margin. So do the stand-downs, which at least put the hazard in front of crews who might otherwise treat a six-foot trench as routine. But the gap Cal-OSHA keeps pointing at isn’t awareness. It’s the moment a foreman decides the box can wait. Until that calculation changes on the small jobs, the violation counts and the investigations will keep coming. For more on where federal safety enforcement is heading, see Exchange’s coverage of OSHA’s renewed heat-enforcement program.
This article discusses workplace fatalities. If you or a coworker has concerns about jobsite safety, OSHA complaints can be filed confidentially.