In 2017 California contributed about 15 percent of the total workers‑compensation premiums paid across the United States, a share that far exceeds the national average of roughly 3 percent per state when weighted by population.
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Why California's Percentage Is Higher
Two primary factors drive the outsized premium share: the state's massive labor pool—over 19 million workers in 2017—and its comparatively high average wages, which raise the statutory premium rates that insurers must charge.
National Premium Landscape 2017
The National Council on Compensation Insurance (NCCI) reported total U.S. workers‑compensation premiums of $95 billion in 2017. When divided among the 50 states, the average contribution per state is about $1.9 billion, or roughly 2 percent of the total.
California's Premium Figures
California's total premium bill for 2017 was approximately $14.3 billion. This places the state at the top of the ranking, both in absolute dollars and as a percentage of the national total.
Comparative Table of Top States
| State | 2017 Premiums (USD billion) | Share of U.S. Total |
|---|---|---|
| California | 14.3 | 15 % |
| Texas | 7.2 | 7.6 % |
| Florida | 5.9 | 6.2 % |
| New York | 5.4 | 5.7 % |
| Pennsylvania | 3.8 | 4.0 % |
Implications for Employers and Insurers
For California employers, the high premium share translates into larger payroll‑tax obligations and a greater focus on safety programs to control rates. Insurers operating in the state must manage a larger risk pool, which can affect pricing, underwriting, and reserve strategies.
Trends Beyond 2017
While this answer centers on 2017, the underlying drivers—population size, wage levels, and industry composition—continue to keep California near the top of workers‑compensation premium rankings. Shifts in remote work, legislative reforms, or changes in occupational injury trends could modify the percentage in future years.