California Takes Workers' Comp Seriously
Contractors can lose their licenses over workers' compensation violations. California enforces this actively, and the penalties for operating without coverage can sink a small business. Our California workers' comp page covers how we place coverage.
The Basic Rule
If you have even one employee, you need workers' compensation insurance. Full stop. It doesn't matter if they're part-time, seasonal, or your cousin who helps out on weekends. One employee triggers the requirement.
This applies to full-time crews, part-time helpers, seasonal labor during busy stretches, and family members on payroll. If you're cutting them a check and they're doing work for your business, they need to be covered.
The Sole Proprietor Question
Working by yourself with no employees? Most license classes can still file an exemption with the CSLB, but not all, and not for long. C-8 concrete, C-20 HVAC, C-22 asbestos abatement, C-39 roofing, and C-49 (formerly C-61/D-49) tree service contractors must carry workers' comp even with no employees. Starting January 1, 2028, SB 216 (as amended by SB 1455) ends the exemption for nearly every license class. Our SB 216 guide covers the details.
Many general contractors won't let you on their job sites without proof of workers' comp, even if you're a one-person operation. Some project owners require it regardless of your employee count. Getting hurt without coverage means medical bills and lost income come out of your pocket.
The cost of a policy for a one-person operation depends mostly on your trade and the payroll used to rate it. It's worth getting a quote before 2028 so it isn't a surprise.
What Coverage Actually Provides
California workers' comp pays for all reasonable medical treatment, wage replacement at roughly two-thirds of your average weekly pay, compensation for permanent injuries or disabilities, death benefits for surviving family members, and a supplemental job displacement voucher for retraining when someone can't return to their previous work.
You don't get to pick and choose. The law mandates all of this. That's what your premium is buying.
When Things Go Wrong
Operating without required coverage opens you up to serious consequences.
| Situation | What Happens |
|---|---|
| Caught uninsured | Stop order on your work, plus a penalty of $1,500 per employee (Labor Code 3722) |
| Uninsured for more than a week | Penalty of twice the premium you would have paid, or $1,500 per employee, whichever is greater |
| An employee files a claim | Additional penalty of $2,000 per employee if the claim is not compensable, or $10,000 per employee if it is |
| Criminal charge (Labor Code 3700.5) | Misdemeanor: up to one year in county jail, or a fine of at least $10,000; at least $50,000 for repeat convictions |
Penalty assessments under Labor Code 3722 are capped at $100,000, except the penalty for being uninsured for more than a week (twice the premium or $1,500 per employee, under subdivision (b)), which has no cap. The CSLB can also suspend your license.
Beyond the fines, an injured worker can pursue you directly for medical costs, lost wages, and legal fees. A single serious back injury can become a six-figure liability for an uninsured contractor.
How Rates Work
Workers' comp pricing is based on your classification code and total payroll. Each California class, assigned under the WCIRB's rules, has a rate per $100 of payroll.
| Classification | Relative Cost |
|---|---|
| Office Staff (8810) | Very low |
| Electrical (5190) | Moderate |
| Plumbing (5183) | Moderate |
| Carpentry (5403 / 5432) | High |
| Roofing (5552 / 5553) | Among the highest |
For policies starting on or after September 1, 2026, the California Department of Insurance approved an average advisory pure premium rate of $1.65 per $100 of payroll, a 6.6% increase. Your actual rate depends on your classes, your experience mod, and each carrier's pricing. See what the September 2026 change means. Roofing contractors often struggle to find affordable coverage through standard markets.
Getting Coverage
You have options. Private insurance carriers are the most common choice, with competitive pricing for contractors with clean records. The State Compensation Insurance Fund provides a safety net if private markets decline your application. Self-insurance is available for larger contractors who meet strict financial requirements.
Most California contractors go through private carriers. Markets that specialize in construction matter when you have classification complexities or challenging claims history.
Keeping Costs Manageable
Document your safety program. Formal training, regular safety meetings, and proper equipment usage all signal to underwriters that you're a lower risk.
Classify your employees correctly from day one. Misclassification leads to audit surprises that can cost thousands.
Implement a return-to-work program. Getting injured employees back on modified duty faster reduces your claim costs and keeps your experience mod down.
Shop the market. Rates can vary significantly between carriers for the same risk, so comparing quotes at renewal is worth the effort. Our experience mod guide explains the other big lever on price.
Common Questions
Do 1099 subcontractors need workers' comp?
Not if they're legitimately independent with their own coverage. But if they don't have a policy and get hurt on your site, you could be on the hook. Always collect certificates.
Can I use an out-of-state policy in California?
Your policy must specifically list California as a covered state. Most policies can add California with a simple endorsement, but don't assume it's included automatically.
What if an uninsured worker gets injured?
You can be responsible for the worker's benefits and face the penalties listed above. For a small contractor, that combination can be financially devastating.