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December 20, 2025
Agency

How Workers’ Compensation Insurance Premiums Are Calculated

Understanding how workers’ compensation premiums are calculated is essential for California business owners who want to manage their insurance expenses effectively. At Farrell Insurance Agency, we know that navigating workers’ comp rates can feel complicated, especially with the unique regulations and cost factors in California. Our team is here to help you make sense of the process and find solutions that fit your business.

Key Factors That Influence Workers’ Comp Premiums

Workers’ compensation premiums in California are determined by several important elements:

Classification Codes
Each job role in your business is assigned a classification code based on the type of work performed. Riskier jobs, such as construction or manufacturing, typically have higher rates than lower-risk roles like office administration.

Payroll Size
Premiums are calculated as a percentage of your total payroll. The higher your payroll, the more you can expect to pay for coverage. Accurate payroll reporting is crucial to ensure you’re not over- or underpaying.

Experience Modification Factor (EMF)
California uses an experience modification factor to adjust your premium based on your company’s claims history. Businesses with fewer or less severe claims may receive a lower EMF, which can reduce premiums, while a higher EMF can increase costs.

State Rates and Regulations
The California Department of Insurance sets advisory rates, but actual premiums may vary depending on your insurer and any additional surcharges or credits. State regulations also impact coverage requirements and pricing.

The following may also affect your workers’ comp premiums:

  • Safety programs and workplace practices
  • Claims frequency and severity
  • Industry trends and economic conditions

How Our Team Supports California Businesses

At Farrell Insurance Agency, we help our clients understand the details behind their workers’ compensation insurance. Our team reviews your business operations, assists with accurate classification, and offers guidance on improving workplace safety to help control costs. We also monitor changes in California regulations to ensure your coverage remains compliant and cost-effective.

If you have questions about your workers’ compensation insurance or want to explore ways to manage your premium, our team is ready to help. Contact us today to discuss your needs and discover how we can support your business.

This blog is intended for informational and educational use only. It is not exhaustive and should not be construed as legal advice. Please contact your insurance professional for further information.

Categories: Blog, Workers’ Compensation Insurance

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