Both insurance companies and states utilize NCCI's statistical data for rating and pricing coverage. NCCI's function is to develop and provide the statistical data used to set manual rates for workers compensation insurance. This process is done, individually, for each state that utilizes NCCI. These manual rates are used for pricing and to assign each employers' annual Experience Modification Rate, These NCCI worksheets, or Experience Modification Ratings are developed based on a ratio of claims frequency and cost of premium paid. Workers Comp Class Codes | Lookup Workers Compensation Class Codes | Workers Comp Class Code Finder - visit https://generalliabilityinsure.com/workers-comp-class-codes/