Trench Safety Stand Down (TSSD) is an annual week of voluntary job site safety meetings organized by the National Utility Contractors Association (NUCA). Each June, contractors pause work to talk with crews about trench and excavation hazards and the protective systems that prevent cave-ins. Participation is free and open to NUCA members and non-members alike, including utility, residential and highway contractors, plumbers, unions, schools and the military.
For employers, the stand down is a ready-made reason to stop, check every open excavation and confirm that crews know when a trench needs protection. A cave-in can bury a worker in seconds, and rescue is often not possible in time, so prevention has to happen before anyone steps in.
When Is Trench Safety Stand Down in 2027?
NUCA has not yet announced the 2027 dates. The stand down is held as a work week in June, and NUCA publishes the dates and opens registration each year on its Trench Safety Stand Down page. The 2026 stand down ran June 15–19, 2026, and NUCA has held the week in June for about a decade.
NUCA also declared June 2026 "Trench Safety Month," using the whole month to reach companies outside its membership with trench and excavation safety education. Plan your 2027 stand down for mid-June and confirm the exact week once NUCA posts it.
Why It Matters at Work
OSHA states that trench collapses, or cave-ins, pose the greatest risk to workers' lives in excavation work. Other hazards include falling loads, hazardous atmospheres, water accumulation and mobile equipment operating near the edge.
The numbers swing sharply from year to year. In July 2022, the U.S. Department of Labor announced enhanced enforcement after 22 workers died in trenching and excavation work in the first six months of that year, more than the 15 deaths recorded in all of 2021. OSHA later reported that trench collapse fatalities fell from 39 in 2022 to 15 in 2023. Progress is real, but it depends on contractors protecting every trench, every time.
Most of these deaths share a pattern: no protective system, or one that was available on site but not used. The DOL release on the 2022 surge described a case where trench shields that could have saved two workers sat unused beside the excavation.
How to Take Part
- Register with NUCA. Sign up through the TSSD page. NUCA emails participating companies a certificate of participation and mails helmet stickers to individuals.
- Hold a stand down on each active job. Gather crews at the start of a shift, walk the excavation together and talk through the hazards that are actually present.
- Use the organizer's resources. NUCA links to OSHA trench safety materials, toolbox talks, a safety checklist, its "Dig This" podcast and training offered by its equipment partners.
- Check your protective systems. Inspect trench boxes, shoring and sloping plans. Make sure equipment is on site, in good condition and suited to the soil and depth.
- Confirm your competent person. Verify that each crew has a trained competent person who can classify soil, inspect the trench and stop work when conditions change.
- Review your permit process. If you use a permit to work for excavations, check that permits cover utility locates, protective systems, access and atmospheric testing.
- Invite first responders. Local fire and rescue teams often take part, and a joint walk-through helps everyone understand trench rescue limits.
If your crews also work at height, pair TSSD with the National Safety Stand-Down to Prevent Falls to build a stand-down habit across the season.
Toolbox Talk: Never Enter an Unprotected Trench
- Soil is heavy and fast. A collapse can bury you under thousands of pounds of soil before you can react. You cannot outrun it or dig yourself out.
- Five feet is the trigger. Any trench 5 feet or deeper needs a protective system, such as sloping, benching, shoring or a trench box, unless it is entirely in stable rock. Shallower trenches may need protection too if the competent person sees signs of a possible cave-in.
- Inspection comes first. The competent person inspects the trench before work starts each day and after rain or any change in conditions. Do not enter until it has been inspected.
- Keep the edges clear. Spoil piles, materials and equipment stay back from the edge. Weight at the lip of a trench adds pressure on the walls.
- Know your way out. There must be a ladder, ramp or other safe exit close to where you are working. Look for standing water and atmospheric hazards before you go in.
Discussion question: On our current job, what would make you hesitate to enter the trench, and who would you tell?
Related Requirements
OSHA's excavation standards in 29 CFR 1926 Subpart P apply to any construction excavation, including trenches. In plain terms, they require:
- Protective systems for excavations 5 feet or deeper, unless made entirely in stable rock (1926.652). Systems that do not follow the standard's tabulated options must be approved by a registered professional engineer.
- A safe means of exit, such as a ladder or ramp, in trenches 4 feet or deeper, within 25 feet of lateral travel for workers (1926.651).
- Daily inspections by a competent person, before work and as needed during the shift (1926.651).
- Spoil and equipment kept at least 2 feet from the edge, or contained by retaining devices (1926.651).
- Utility locates before digging and atmospheric testing where a hazardous atmosphere could exist.
See our full summary of Trenching & Excavation requirements, and OSHA's Trenching and Excavation Safety page for official guidance.
How SMS360 Helps
A stand down works best when it leads to lasting controls. With SMS360 Work Permits, you can issue excavation permits that require the right checks before digging starts, capture competent person inspections on digital checklists from a phone or tablet, and keep sign-offs and supporting documents in one place. Observations and near misses raised during the stand down can be logged on the spot and turned into corrective actions with owners and due dates, while dashboards show which sites and crews still have open items.
Frequently Asked Questions
When is Trench Safety Stand Down 2027?
NUCA has not announced the 2027 dates yet. The event is held as a work week in June, and the 2026 stand down ran June 15–19. Check NUCA's TSSD page for the official dates and registration.
Who organizes Trench Safety Stand Down?
The National Utility Contractors Association (NUCA) organizes the event, with support from OSHA and equipment and training partners. Any company can take part, whether or not it belongs to NUCA. Registration is free.
Is there a theme for Trench Safety Stand Down?
NUCA does not publish a separate annual theme. The focus each year is the same: trench and excavation hazards and the use of protective systems to prevent cave-ins, fatalities and serious injuries.
