Workers compensation claim data, aggregated across the BLS Survey of Occupational Injuries and state fraud bureau reports, consistently identifies five categories of workplace hazards that produce the majority of claims. Understanding which hazards are most likely to cause injury lets workers focus their pre-shift attention, document appropriate precautions, and identify when an injury’s mechanism fits a well-established pattern that workers comp will recognize.

1. Falls from elevation

Falls from ladders, scaffolds, roofs, and raised work platforms cause roughly a third of all construction fatalities and produce thousands of non-fatal workers comp claims annually. Fall protection regulations (29 CFR 1926.501) require guardrails, safety nets, or personal fall arrest systems above six feet in construction. Violations of this standard lead OSHA's top-cited list every year. For injured workers, a fall-from-elevation claim usually accepts straightforwardly if medical records document the mechanism and any contributing equipment failures.

2. Slip, trip, and same-level falls

Same-level falls — slipping on wet floors, tripping over cables, losing footing on icy surfaces — produce 20-25 percent of workplace injuries requiring lost workdays. Winter produces a disproportionate share via ice-related falls. Most of these claims are compensable when they occur on employer premises, though the “premises rule” creates contested cases at the edges (parking lots, approach sidewalks, client site visits).

3. Contact with objects or equipment

Being struck by falling objects, caught in machinery, or pressed against equipment causes roughly 15 percent of workplace injuries. Machine guarding violations (29 CFR 1910.212), lockout/tagout failures (1910.147), and inadequate personal protective equipment underlie most of these incidents. The injuries range from minor lacerations to amputations and crush injuries. Documentation of missing guards or improper procedures strengthens both the workers comp claim and any third-party claims against equipment manufacturers.

4. Repetitive stress and ergonomic injuries

Cumulative trauma — carpal tunnel syndrome, rotator cuff tears, chronic low back pain from repetitive lifting — develops over months or years rather than from a single incident. These claims are compensable in every state but are harder to prove than acute injuries. Medical documentation linking the condition to specific work activities is essential. Jobs with high repetitive task volumes (warehousing, assembly, healthcare patient handling, data entry) produce the bulk of these claims.

5. Chemical and environmental exposure

Occupational exposure to hazardous chemicals, extreme temperatures, noise above OSHA action levels, and confined-space atmospheres causes long-latency injuries and illnesses that often don’t manifest until years after exposure. Hazard Communication violations (1910.1200) — missing Safety Data Sheets, inadequate labeling, untrained workers — underlie most compensable chemical-exposure claims. Occupational asthma, hearing loss, chemical burns, and heat stroke are the most common outcomes.

Related reading

For the regulatory framework around these hazards, see our OSHA Violations practice page. For the documentation that supports any workplace injury claim, read A pre-shift checklist. For the full claims process, the Complete Workers Compensation Guide covers reporting through settlement.