For a California contractor license, the insurance requirement that trips people up is workers compensation. The Contractors State License Board (CSLB) requires a licensed contractor with employees to carry workers comp and file proof of it with the board, and letting that coverage lapse suspends the license automatically. Some classifications must carry comp even with no employees at all, and that list is growing, so the answer is not simply based on whether you have staff.
Who this is for: California contractors and tradespeople sorting out whether their license requires workers comp and when they must carry it.
The short version
- A California contractor license is required for construction work priced at 500 dollars or more in labor and materials.
- A licensed contractor with employees must carry workers comp and file proof with the CSLB.
- Letting required coverage lapse suspends your contractor license automatically.
- Licensed roofers (C-39) must carry workers comp even with no employees.
- Several other classifications must carry it regardless of employees, and that rule expands to all contractors in 2028.
What the CSLB actually requires
The board that issues your license, the CSLB, ties your license to your workers comp. If you have employees, you must carry a policy and file a certificate of workers comp (or of self-insurance) with the board, and if the coverage lapses, the board suspends your license until it is restored. For most classifications, a contractor with no employees has not been required to carry comp, but that general rule is being phased out, and specific trades already have to carry it whether or not they employ anyone.
Who must carry comp, and when
| Contractor | Must carry workers comp? | Notes |
|---|---|---|
| Any licensed contractor with employees | Yes, and file proof with the CSLB | License suspended if coverage lapses |
| Roofer (C-39) | Yes, even with no employees | A longstanding rule for roofers |
| Concrete (C-8), HVAC (C-20), asbestos (C-22), tree service (D-49) | Yes, even with no employees | Required since January 1, 2023 |
| Most other licensed contractors with no employees | Not yet required to carry regardless of employees | Many still carry it for contracts |
| All licensed contractors, starting January 1, 2028 | Yes, regardless of employees | The universal rule was delayed to that date |
The phase-in you should plan for
California is moving toward requiring every licensed contractor to carry workers comp whether or not they have employees. Roofers have long had to. Since January 1, 2023, concrete, heating and air conditioning, asbestos, and tree-service classifications must carry it regardless of employees. The rule that extends this to all licensed contractors was originally set for January 1, 2026 but was pushed back, and as of mid-2026 it takes effect January 1, 2028. So a solo contractor outside those trades is generally not forced to carry comp yet, but the requirement is coming, and many carry it now because clients and general contractors demand proof anyway.
A general contractor example
Illustrative, not a quote. A general contractor in Sacramento with three employees renews his license and confirms his workers comp certificate is on file with the CSLB, since a lapse would suspend the license and stop his jobs. He also runs a small roofing division under a C-39 classification, which must carry comp even when no employees are assigned to it. We make sure both his employee coverage and his roofing classification are handled, and that his certificate is filed so his license stays clear. As the 2028 universal rule approaches, he is already covered.
Real questions California owners ask
What insurance does a California contractor license require?
The requirement that trips people up is workers comp. A licensed contractor with employees must carry it and file proof with the CSLB, and a lapse suspends the license. Some trades must carry it with no employees.
Do I need workers comp to keep my contractor license active?
If you have employees, yes. You must carry a policy and file a certificate with the CSLB, and if the coverage lapses, the board suspends your license automatically until it is restored.
Do I need workers comp as a contractor with no employees?
For most classifications, not yet, though many carry it for contracts. But roofers and several other trades already must carry it with no employees, and the rule expands to all contractors in 2028.
Which trades must carry comp even without employees?
Roofers (C-39) have long had to, and since January 1, 2023 so must concrete (C-8), heating and air conditioning (C-20), asbestos (C-22), and tree-service (D-49) classifications, regardless of employees.
When does every contractor have to carry comp in California?
Starting January 1, 2028, all licensed contractors must carry workers comp regardless of employees. That universal rule was originally set for 2026 but was delayed, so it now takes effect in 2028.
When is a California contractor license required at all?
A license is required for construction work priced at 500 dollars or more, counting both labor and materials. Below that threshold a license is generally not required for the job.
What happens to my license if my coverage lapses?
The CSLB suspends your license automatically if required workers comp lapses. You generally cannot work legally under a suspended license until you restore the coverage and clear the suspension.
Why California owners choose Morrow
- We shop the right market for you. In California you buy workers' comp on the open market from any licensed private carrier, with the State Compensation Insurance Fund competing alongside them and standing as the insurer of last resort, so we can shop your rate freely and still have a guaranteed fallback for hard-to-place accounts.
- We catch pricing mistakes. Your price depends heavily on the category your work falls into for pricing (the class code). Put people in the wrong category and you overpay for years. We review your payroll and classifications before you buy.
- Proof of coverage, fast. Need a certificate (proof of coverage) for a general contractor or a landlord before Monday? We turn those around the same business day for most carriers.
- We help lower the score that drives your price. Insurers give you a score based on your past claims that raises or lowers your cost (the experience modification rate). We review it each year, flag errors, and connect you with return-to-work and safety resources that bring it down.
- Real people when a claim happens. When someone gets hurt, we stay involved through the life of the claim, not just at renewal.
Related California guides
Every California business is set up a little differently. These companion guides answer the same question for other situations, plus the national explainers behind the terms used here.
- Business insurance in California (start here)
- Workers comp: the owner's overview
- I own an LLC: do I need workers comp?
- I'm a sole proprietor: do I need workers comp?
- I own a corporation (C-corp or S-corp): do I need it?
- We're a partnership: do we need workers comp?
- We're a nonprofit: do we need workers comp?
- My workers are 1099: do I still need it?
- Only part-time or seasonal staff: do I need it?
- I only employ family: do I need workers comp?
- Remote or out-of-state staff: do I need coverage?
- What happens if I don't carry workers comp?
- How much does workers comp cost?
- How do I get workers comp (even if turned down)?
- Workers compensation insurance, explained
- What workers comp costs (national guide)
- Do I need workers comp for 1099 contractors?
- What workers comp does not cover
- California general contractor workers comp
This guide is general information, not legal advice. California rules and penalty amounts can change, so verify current requirements with California Division of Workers' Compensation (DWC), a division of the Department of Industrial Relations (DIR) or a licensed advisor before you rely on them. Last updated: July 2026.