California’s State Compensation Insurance Fund, usually shortened to State Fund, is the state’s public workers’ compensation insurer, and it is required by law to offer a policy to any employer in California, no matter the industry or the claims record. That open-door rule is what makes State Fund workers’ comp the fallback option for businesses that private carriers decline, and a competitive quote-shopping option for everyone else.1State Fund. State Fund Facts
What State Fund Is and Why It Exists
State Fund was created by the Boynton Act in 1913 as a publicly chartered, self-supporting insurance carrier. It competes head-to-head with private workers’ compensation insurers on price and service, but it operates under a different mandate: it cannot refuse to insure a California employer based on industry classification or prior claims.1State Fund. State Fund Facts It runs on premiums and investment returns rather than tax dollars.2State of California Department of Finance. Enacted Budget Detail – 8420 State Compensation Insurance Fund
Because it has no private shareholders, any surplus goes back to policyholders as a dividend or stays in reserves. For the 2025 policy year the board declared a dividend of roughly 20% of estimated annual premium, about $200 million returned to qualifying policyholders.3State Fund. State Fund Declares a 20% Dividend for 2025 Policy Year Dividend amounts change year to year with the fund’s performance, and no California insurer is allowed to promise a future dividend on an unexpired policy.
Who Typically Buys a State Fund Policy
Any California employer can buy from State Fund, but three groups rely on it most.
Small businesses are the first. Large private carriers often aren’t interested in writing low-premium policies for a three-person landscaping crew or a sole proprietor with one part-time helper, so State Fund may be the only carrier willing to quote.
High-risk trades are the second. Agriculture, construction, roofing, and similar physically dangerous industries get declined or priced out of the voluntary market regularly. State Fund cannot reject an application based on classification code, which effectively makes it the backstop for California’s most hazardous work.1State Fund. State Fund Facts
Employers with bad loss history are the third. If your experience modification rate has climbed after a run of claims and private carriers won’t renew you, State Fund will still write the policy.
How State Fund Compares to Your Other Two Options
California law requires every employer other than the state itself to carry workers’ compensation. You have three ways to satisfy that requirement, and State Fund is one of them.
Private Insurance Carriers
Hundreds of private insurers are licensed to write workers’ comp in California. They set their own rates under the state’s open rating system, so prices vary carrier to carrier for the identical classification code.4California Department of Insurance. Workers Compensation A well-priced private policy can beat State Fund, but private carriers can and do decline applications based on risk.
State Fund
State Fund operates competitively with private carriers on pricing but is obligated to quote any California employer that applies. For a business that has been turned down elsewhere, there is no application to lose: coverage is available.
Self-Insurance
Self-insurance is realistic mostly for large employers. California requires at least three calendar years in business, three years of certified audited financial statements, an acceptable credit rating, an effective injury and illness prevention program, and a security deposit sized by an actuarial study of projected losses. New self-insurers also have to use a licensed third-party claims administrator for their first three years.5California DIR. SIP – Overview and Requirements for Becoming Self-Insured
The Cost of Carrying Nothing
Operating without workers’ comp is a criminal misdemeanor. A first conviction brings up to one year in county jail, a fine of at least $10,000 or double the premium that should have been paid (whichever is greater), or both. A second conviction raises the minimum fine to $50,000. The state can also issue a stop order shutting down operations until you obtain coverage.6California Legislative Information. California Code LAB Division 4, Part 1, Chapter 4, Article 1, Section 3700.5 This is the reason State Fund’s guaranteed-issue role matters: there is no legal path to simply skip coverage.
What a State Fund Policy Costs and How the Premium Is Built
Workers’ comp premiums follow a predictable formula whether you buy from State Fund or a private carrier. Three inputs drive the number.
The first is your classification code, assigned by the Workers’ Compensation Insurance Rating Bureau of California (WCIRB). Each code carries a rate expressed as dollars per $100 of payroll. The WCIRB’s average advisory pure premium rate effective September 1, 2025 is $1.52 per $100 of payroll, but actual rates swing widely: an office classification might sit well under $1.00, a roofing classification many times the average.7WCIRB. September 1, 2025 Workers Compensation Claims Cost Benchmark Rate Filing Decision and Order
The second is your payroll in each classification. Annual payroll divided by 100, multiplied by the rate, gives the base premium. A contractor with both field crews and office staff gets two separate calculations, because the rates differ.
The third is your experience modification rate, or mod. The mod compares your three-year claims history to similar businesses. Below 1.0 means fewer claims than expected and reduces your premium; above 1.0 means more claims and increases it.4California Department of Insurance. Workers Compensation A new business with no history starts at 1.0. The gap between a 0.80 mod and a 1.30 mod is 50% of the base premium, which on a modest payroll already runs into thousands of dollars a year.
With State Fund, the dividend is a potential reduction on top of all that. Qualifying policyholders for the 2025 policy year received roughly 20% of their annual premium back after their policy expired.3State Fund. State Fund Declares a 20% Dividend for 2025 Policy Year It isn’t guaranteed in advance, and it varies, but it belongs in your comparison when quote-shopping.
How to Apply for Coverage
Before you start the application, pull together the information the underwriter needs. State Fund asks for:
- Your Federal Employer Identification Number (FEIN).
- Estimated annual payroll, broken out by job classification.
- A plain-English description of what your employees actually do day-to-day, so the right classification codes get assigned.
- Loss history from the past three to five years, including your experience modification rate.
- Ownership and entity details: legal structure, owners’ names, contact information.
Application forms are available on State Fund’s website and at its regional service centers.8State Fund. Application for Workers Compensation Insurance Submissions go through the State Fund Online portal, either directly from the employer or through a broker. Brokers can also submit from agency management systems like Applied or AMS that integrate with the portal.9State Fund. State Fund Online Submission Requirements
Once the application and initial payment are in, State Fund can bind temporary coverage while underwriting reviews the file. The underwriter confirms your classifications match the work and your payroll estimate is reasonable, then issues the formal policy and a certificate of insurance. That certificate is what general contractors, landlords, and state regulators will want to see as proof you’re covered. Keep the submission confirmation receipt; if the start date of your coverage is ever questioned, the timestamp settles it.
After the Policy Starts: Audits and Claims
Two things happen after you’re bound that catch employers off guard.
The first is the annual payroll audit. Your initial premium is based on estimated payroll, and at the end of each policy term the insurer reconciles the estimate against actual numbers. Expect requests for your payroll register, W-2s and 1099s, state unemployment tax reports, overtime records, and subcontractor payment records. If actual payroll came in higher than estimated, you owe additional premium. If lower, you get a credit. The same adjustment happens if employees were doing work that belonged to a different classification, so misclassifying a field laborer as office staff will surface in the audit. Updating State Fund mid-year when your payroll or workforce changes is the cleanest way to avoid a surprise bill.
The second is a workplace injury. The practical move is to report any injury to State Fund promptly and cooperate with the investigation. Fast reporting keeps medical costs down, keeps small injuries from becoming expensive claims, and ultimately protects your experience mod. Formal safety programs, return-to-work arrangements that bring injured employees back on modified duty, and keeping claims in the medical-only category where possible all compound into a lower mod over the following three-year window, which is the single biggest lever you control on premium.
When a State Fund Policy Isn’t Enough
A standard State Fund policy covers California employment, but some workers fall under federal programs instead. Maritime employees on navigable U.S. waters or in adjoining areas used for loading, unloading, repairing, or building vessels are covered by the federal Longshore and Harbor Workers’ Compensation Act.10GovInfo. Federal Register Vol. 91, No. 44, March 6, 2026 Employees working overseas on U.S. government contracts, military bases, or foreign assistance projects fall under the Defense Base Act.11U.S. Department of Labor. DBA Information If your business involves either kind of work, you’ll need a separate federal policy on top of, or instead of, state coverage.