What Construction Leaders Need to Know About Trench Safety, Competent Persons, and the Cost of Inconsistency
Most trenching incidents don't happen on complex jobs. They happen on routine work. A 6- to 7-foot utility repair. A service line install. A quick tie-in a crew has completed dozens of times. The hazards in trenching and excavation are well understood, and the controls are clearly defined in OSHA standards. Yet incidents and citations continue at a steady rate. That gap is not about awareness, it is about execution. Most trench-related incidents and OSHA violations come from basic controls applied inconsistently in the field, often on the jobs crews assume are the lowest risk.
Trenching and excavation remain a priority under OSHA's National Emphasis Program (NEP), directive CPL 02-00-161 (1). Under the NEP, compliance officers can initiate an inspection whenever they observe an open trench or excavation, even without a complaint or visible violation.
A trench visible from a roadway can trigger a same-day inspection, regardless of project size. Trench safety has to be part of daily operations across every crew and every site, not a high-risk exception.
Trench collapse fatalities dropped from 39 in 2022 to 13 in 2024, then reversed in 2025 with 16 deaths, the highest total since 2022 (2). More fatal collapses have been reported in early 2026.
OSHA has responded with some of its largest trenching-related penalties on record, including one contractor assessed more than $4.7 million in proposed penalties after a fatal cave-in tied to missing egress, inadequate cave-in protection, and spoil piles within 2 feet of the trench edge (3).
None of these are complex failures. They are fundamental controls that were missed or ignored. The issue is not complexity, it is consistency.
Large, deep excavations tend to receive the attention they deserve. Crews treat them as high-risk, engineered designs get reviewed, and protective systems get installed carefully. Those jobs often go well.
Most incidents happen somewhere else. On short-duration jobs where risk is underestimated. A quick repair. A shallow trench. A task expected to take an hour. These situations create a false sense of security, and that perception is where failures begin.
A few conditions show up repeatedly. Previously disturbed or backfilled soil gets misclassified as more stable than it is. Trenches near roadways or active equipment experience vibration that affects wall stability, often unnoticed. Weather changes conditions faster than crews anticipate. And time pressure compresses both planning and inspection.
The common thread is not technical. It is behavioral. When a job feels routine, controls are applied with less discipline. That is where cave-ins actually happen.
Under 29 CFR 1926.650, every excavation must have a designated competent person: someone who can identify hazards and has the authority to correct them immediately (4).
In many operations, the role is treated as a formality. It is assigned without the training, field experience, or authority required to function as an actual control. That gap matters.
A competent person has to accurately assess soil conditions, evaluate protective systems, and recognize how quickly site conditions change. Just as important, they need the authority to stop work without hesitation. When that authority is unclear or unsupported, decisions get delayed, work continues, and risk compounds.
A trench that appears stable at the start of a shift can become hazardous within hours due to soil movement, vibration, or weather. The competent person is the control that bridges that gap. When the role is properly trained and fully empowered, it becomes one of the most effective safeguards on any construction site.
OSHA requires competent person inspections before each shift, after hazard-increasing events, and throughout the day as conditions change (5). Most construction companies know this. The challenge is maintaining it in real jobsite conditions.
Inspections break down for familiar reasons: production pressure, inconsistent practices across crews, and a lack of standardized process. Paper-based documentation often becomes a formality rather than a tool for evaluating risk.
A strong inspection process is not about checking boxes. It is about understanding how conditions evolve throughout the day. Soil that looks stable in the morning can shift as excavation progresses or equipment introduces vibration. Protective systems have to be matched to current conditions, not initial assumptions. Access points have to remain within reach as work advances. Water accumulation has to be actively managed, not observed and deferred.
When inspections are treated as an active evaluation process, they reduce risk. When they become routine, they lose their value.
Across trenching inspections, OSHA continues to cite the same issues:
In fiscal year 2025 alone, OSHA issued more than 100 citations specifically for missed excavation inspections (6). These are well-known requirements. The issue is not awareness. It is how consistently they get applied across crews, shifts, and jobs.
Inspection documentation is often treated as a compliance requirement. In practice, it is one of the most effective tools for improving decision-making in the field.
A well-designed inspection process forces a competent person to slow down and evaluate conditions rather than rely on assumption. It prompts specific questions about soil classification, protective systems, access, water, and surrounding loads, and it requires those conditions to be considered before work begins. That structure changes behavior.
This is why more contractors are moving from paper to digital inspection tools. Digital systems create consistency across crews, provide immediate visibility into site conditions, and make documentation accessible when needed. More importantly, they let safety leaders see where inspections are happening as expected and where they are not. That visibility is often what separates programs that hold up from programs that only appear compliant on paper.
The most effective trenching programs reduce variability between crews.
That starts with a clearly defined, properly trained, and fully supported competent person role. It continues with standardized inspection processes every crew follows the same way, regardless of job size or duration. It treats documentation as part of the work process, not an administrative task. And it includes quick reassessment whenever conditions change, whether from weather, excavation depth, or surrounding activity.
The contractors who handle OSHA inspections smoothly are the ones who remove variability from how work gets done across sites. That is also what prevents incidents before inspectors ever arrive.
NUCA's annual Trench Safety Stand Down takes place June 15 through 19, 2026 (7). It is a free, industry-wide opportunity to pause, reinforce expectations across crews, and evaluate the systems your competent persons rely on every day. Used well, it is one checkpoint in a year-round program, not a single week of attention.
Managing trenching safety across multiple crews and job sites takes more than written procedures. It takes systems that hold up in the field.
GMG EnviroSafe works alongside construction teams in the areas where trenching programs most often break down: inconsistent inspections, underdeveloped competent persons, and documentation that doesn't reflect real site conditions. Our work includes excavation programs aligned with OSHA standards, practical inspection processes and digital tools crews actually use, competent person training, and site-specific assessments designed to identify and correct gaps in execution.
The goal is straightforward. Consistent performance in the field, not just compliance on paper.
If you'd like help strengthening your trenching and excavation program or preparing for the upcoming Trench Safety Stand Down, GMG EnviroSafe is here to support you.
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(1) OSHA. (2018). National Emphasis Program on Trenching and Excavation (CPL 02-00-161). Retrieved from: https://www.osha.gov/enforcement/directives/cpl-02-00-161
(2) OSHA. (2025). US Department of Labor urges safe practices during trench and excavation work. Retrieved from: https://www.osha.gov/news/newsreleases/osha-trade-release/20250728
(3) OSHA. (2026). US Department of Labor cites construction contractor with 7 willful, 33 repeat violations after fatal Yarmouth cave-in. Retrieved from: https://www.osha.gov/news/newsreleases/osha-national-news-release/20260401
(4) OSHA. 29 CFR 1926.650, Scope, Application, and Definitions. Retrieved from: https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.650
(5) OSHA. 29 CFR 1926.651, Specific Excavation Requirements. Retrieved from: https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.651
(6) OSHA. (2025). Most Frequently Cited Serious Violations in Construction FY 2025. Retrieved from: https://www.osha.gov/sites/default/files/MFC_Construction_FY25.pdf
(7) National Utility Contractors Association (NUCA). Trench Safety Stand Down, June 15 through 19, 2026. Retrieved from: https://nuca.com/events/tssd/
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