Evaluation Window is the three years of data used to determine an employer’s discount or surcharge. This is the three complete years immediately preceding the year when the discount or surcharge is calculated. For example, discounts and surcharges for 2017 are determined using data from 2015, 2014 and 2013.
Industry rate code means a collective liability grouping comprised of employers with a similar industrial undertaking or injury experience. All employers with the same rate code have the same industry premium rate.
Industry premium rate means the rate applied to all employers within a rate code expressed as a dollar amount for every $100 of assessable payroll.
Base premiums are the employer’s total premiums due before any discounts or surcharges are applied.
Firm rate is the industry premium rate plus or minus any applicable discounts or surcharges an employer may receive.