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X-Mod Insurance/Claims
Updated March 2026

Experience Modification Rate (X-Mod)

Definition

A multiplier applied to an employer's workers' compensation insurance premium based on their historical claims experience relative to other employers in the same industry classification. An X-Mod above 1.0 indicates worse-than-average claim history, resulting in higher premiums.

Related Terms

Frequently Asked Questions

What is a Experience Modification Rate (X-Mod)?

A multiplier applied to an employer's workers' compensation insurance premium based on their historical claims experience relative to other employers in the same industry classification. An X-Mod above 1.0 indicates worse-than-average claim history, resulting in higher premiums.

How does experience modification rate affect a workers' compensation claim?

Experience Modification Rate plays an important role in determining the outcome of a workers' compensation claim in California. Understanding this concept helps injured workers, attorneys, and physicians navigate the claims process more effectively.