Who calculates the experience modification factor for workers compensation premiums

While insurers utilize the experience modification factor to determine premiums, they do not calculate it. Instead, they rely on the figures provided by organizations like the NCCI, which specialize in developing these calculations based on statistical data.

The ISO is involved in various aspects of insurance, including providing rating services and statistical data. However, it is not responsible for calculating the experience modification factor; that role is specifically held by the NCCI, which focuses exclusively on workers' compensation.

The U.S. Department of Labor oversees various labor regulations and workplace safety standards but does not calculate the experience modification factor. This calculation is performed by private organizations like the NCCI that specialize in workers' compensation insurance metrics.