How Workers’ Comp Experience Mods Affect Your Premium in California

California has some of the highest workers’ compensation costs in the country, so for businesses in Mission Viejo and across the Central Valley, every point on your experience mod matters. Here’s how it works and how it affects your premium and, ultimately, your bottom line.

What is an experience mod?

An experience modification, or “X-Mod,” is a factor that adjusts your workers’ compensation premium based on your business’s own claims history compared with other businesses in your industry. In California, experience mods are calculated by the Workers’ Compensation Insurance Rating Bureau of California (WCIRB), not by your insurance company, and every carrier has to use the mod the WCIRB issues. Businesses generally qualify for a mod once their premium is above a minimum threshold set by the WCIRB.

How does it affect what I pay?

A mod of 1.00 means your business is average for your industry. Below 1.00 means you pay less, and above 1.00 means you pay more. For example:

• A mod of 0.80 means you pay about 20% less than the average business in your class.
• A mod of 1.50 means you pay about 50% more than an average business in your class.

For a contractor, manufacturer, food processor, or agricultural business with a large payroll, that difference can easily mean tens of thousands of dollars a year.

What goes into the calculation?

The WCIRB looks at your payroll and claims over a three-year experience period, generally the three policy years ending one year before your mod takes effect. It factors in:

• The number of claims your business has had. A lot of small claims can hurt your mod more than one large claim, so frequency matters!
• The severity of those claims, measured by what was paid and reserved.
• Your industry classification and payroll size.
• How your results compare to what’s expected for businesses like yours.

How can I lower my mod?

1. Keep a strong safety program. Every California employer is required by Cal/OSHA to have a written Injury and Illness Prevention Program (IIPP). Make yours a working document, with real training, inspections, and accountability. In the Central Valley, that includes heat illness prevention for outdoor workers.
2. Report injuries right away. Claims reported late tend to cost more.
3. Bring injured workers back with modified duty. A good return-to-work program can keep a claim from turning into lost-time costs.
4. Review your claims and payroll for errors. Mistakes in claim reserves, payroll, or classifications can raise your mod. Review the WCIRB worksheet each year and correct any errors quickly.
5. Work with an independent agent who knows workers’ comp. We can shop your policy with multiple carriers, review your mod worksheet, and help you build a loss prevention plan for your business.

By understanding your experience mod and taking steps to improve it, you can lower your workers’ compensation premiums and protect your business in case of an on-the-job injury. It’s worth taking the time to understand and manage your mod.