Workers' compensation class rates track the injury history of the class, so this is the closest public proxy for why one trade's premium starts higher than another's. 37 trades, three measures, all from BLS: recordable cases, serious (DART) cases, and fatalities.
Total recordable injury and illness cases per 100 full-time workers, 2024, top 37 of 37 trades on this site; private industry overall is 2.3. Bars to scale. Source: BLS SOII Table 1.
Serious cases (days away, restriction or transfer)
Days-away/restricted/transfer injury and illness cases per 100 full-time workers, 2024, top 16 of 37 trades on this site; private industry overall is 1.4. Bars to scale. Source: BLS SOII Table 1.
Fatal injuries per 100,000 FTE (approximate)
Approximate fatal injuries per 100,000 full-time workers, 2024, derived from BLS CFOI counts and SOII hours (BLS's published fatal rates use different hours and may differ). Top 14. Bars to scale.
The recordable rate counts every OSHA-recordable injury or illness. The DART rate counts only those serious enough to cost days away from work, job restriction or transfer — the cases that carry indemnity payments as well as medical cost, and the ones that move an experience modifier. Fatal counts come from a different BLS programme, the census of fatal injuries; dividing by hours worked gives an approximate rate per 100,000 full-time workers, which is how trucking at 404 deaths and landscaping at 246 end up near the top of the third chart while sitting mid-table on the first.
Across the 37 trades the recordable rate runs from 1.5 to 8.5, median 2.5; private industry overall is 2.3. The DART rate runs from 0.7 to 6.9.