Is Worker's Compensation Required in California?

Legal Requirement Overview

California requires most employers to carry worker's compensation insurance or obtain an exemption. The state's Workers' Compensation Act, administered by the Department of Industrial Relations, applies to all employers with one or more employees, regardless of payroll size, unless the business falls into specific exempt categories such as certain agricultural employers, self‑employed professionals, or sole proprietors with no employees.

When a Policy Is Mandatory

If you hire anyone—full‑time, part‑time, seasonal, or temporary—your business must be covered. Contractors who are not classified as independent contractors also trigger coverage obligations. Employers with a payroll under $25,000 in a calendar year are exempt from filing for a certificate of coverage, but they still must purchase insurance if they have employees.

Exemptions and Special Cases

Some businesses qualify for exemptions:

• Self‑employed individuals and sole proprietors without employees.
• Farmers and ranchers who employ workers only on a seasonal basis.
• Certain small businesses with no employees and an annual payroll below the exemption threshold.

Even exempt entities must maintain coverage if they hire a single employee; the exemption is not automatic.

Consequences of Non‑Compliance

Failure to carry required coverage can lead to civil penalties, criminal charges, and denial of workers' compensation claims. Employers may be personally liable for medical costs, lost wages, and punitive damages. Additionally, uninsurable businesses may face suspension of licenses or denial of future contracts that require proof of coverage.

How to Verify Coverage Status

Employers should file a Certificate of Coverage (Form WC 1) with the state and keep it on file. Workers can request a copy of the certificate. Employers can also confirm their status by checking the Department of Industrial Relations' online system or contacting a licensed insurer for verification.

Choosing a Provider and Managing Risk

Selecting a reputable insurer or self‑insured plan reduces exposure. Regular audits of employee classifications, payroll records, and policy terms help ensure ongoing compliance. Employers should also maintain a clear record of employee hours, job duties, and any changes that could affect coverage requirements.