How Much Does Workers' Comp Insurance Cost in California?
Key Takeaways
- The average cost of workers’ comp in California is about $1.64 per $100 of payroll, according to WCIRB data for the first half of 2026.
- Your rate depends mostly on the type of work your employees do. Office jobs cost much less to insure than construction or trucking.
- Your premium is based on payroll, your job classifications, and your claims history (your experience mod).
- Costs are rising. The state’s benchmark rate went up 6.6% for policies starting on or after September 1, 2026.
- In California, every employer with employees must carry workers’ comp, including for part-time workers. Going without it can lead to fines and a stop order.
If you have employees in California, workers’ compensation insurance isn’t optional. The good news is that the cost is easier to estimate than most business insurance once you know how it’s calculated.
Average Cost of Workers’ Comp in California
Workers’ comp is priced per $100 of payroll. Here are the latest statewide numbers:
| Measure | Rate per $100 of payroll | Source |
|---|---|---|
| Average rate charged by insurers | $1.64 | WCIRB, first half of 2026 |
| Average advisory pure premium rate | $1.65 | California Department of Insurance, effective Sept. 1, 2026 |
These are statewide averages, not quotes. Your rate can be much higher or lower depending on your industry and history.
What’s the advisory pure premium rate? It’s a benchmark the Insurance Commissioner approves each year to reflect expected claim costs. Insurers aren’t required to use it, but it shows where prices are heading. For September 1, 2026, the Commissioner approved a 6.6% increase over the prior year.
How Your Workers’ Comp Premium Is Calculated
The basic formula looks like this:
(Payroll ÷ 100) × Class code rate × Experience mod = Estimated premium
- Payroll: what you pay your employees each year
- Class code rate: each type of job has its own code and rate, based on how risky the work is
- Experience mod (X-Mod): compares your claims history with similar businesses. A mod below 1.00 can lower your premium. A mod above 1.00 can raise it.
Hypothetical example: A business with $200,000 in annual payroll and a rate of $1.64 per $100 would pay about $3,280 a year before any experience mod, fees, or credits. This is only an example to show the math, not a quote.
Not every business has an experience mod. The WCIRB applies one only after your premium reaches a minimum size, which it adjusts every year.
What Affects the Cost of Workers’ Comp
- Type of work: jobs with more injury risk, like construction, roofing, or trucking, have higher rates than office or retail jobs
- Payroll size: more payroll means a higher premium
- Claims history: frequent or expensive claims raise your experience mod
- Safety programs: training and a safe workplace help prevent claims
- Correct class codes: employees placed in the wrong code can cost you more or cause problems at audit time
How to Lower Your Workers’ Comp Costs
- Make sure every employee is in the right class code. Office staff shouldn’t be coded as field workers.
- Invest in safety training to prevent injuries.
- Report injuries quickly. Early care often keeps claims smaller.
- Help injured employees return to work with modified duties when possible.
- Keep accurate payroll records to avoid surprises at your year-end audit.
- Compare insurers. Rates can vary from company to company for the same business.
Who Needs Workers’ Comp in California?
California requires every employer with employees to carry workers’ compensation insurance. That includes part-time employees.
If the Labor Commissioner finds that you don’t have valid coverage, you can face:
- A $1,500 fine for each employee without coverage
- A stop order that shuts down your work until you get insured
- Paying employees’ wages for the time work was stopped
- Up to $10,000 in additional penalties and misdemeanor charges if you violate the stop order
What Does Workers’ Comp Cover?
When an employee is hurt or gets sick because of their job, workers’ comp can help pay for:
- Medical care
- Temporary disability benefits while they can’t work
- Permanent disability benefits if the injury has lasting effects
- Supplemental job displacement benefits for retraining
- Death benefits for the employee’s dependents
It also generally protects you from being sued by the employee over a covered work injury.
Frequently Asked Questions
How much does workers’ comp cost in California?
According to WCIRB data for the first half of 2026, the average rate charged by insurers was about $1.64 per $100 of payroll. Your rate depends on your industry, payroll, and claims history.
How is workers’ comp calculated in California?
Insurers divide your payroll by 100, multiply by the rate for each job class code, and then apply your experience mod if you have one.
Is workers’ comp required for one employee in California?
Yes. California requires every employer with employees to carry workers’ compensation insurance, including for part-time workers.
Why is workers’ comp going up in California?
The California Department of Insurance approved a 6.6% increase in the benchmark pure premium rate for policies starting on or after September 1, 2026, reflecting higher expected claim costs.
What is the penalty for not having workers’ comp in California?
The Labor Commissioner can issue a $1,500 fine per uninsured employee and a stop order that halts your work until you get coverage.
Get a Workers’ Comp Quote for Your California Business
Strong Tie Insurance has helped California businesses since 1997. Our bilingual agents compare multiple insurers, check that your employees are in the right class codes, and help you find coverage that fits your payroll and budget.
Learn more about our workers’ compensation insurance, request a free workers’ comp quote, or call us at (800) 924-7070. You can also visit one of our 10 offices in Southern California.
