The MA Workers’ Compensation Rating and Inspection Bureau (WCRIBMA) released Special Bulletin 04-19, Residual Market Loss Ratio and Burden Estimate. Residual Market Burden is a measure of the pool-related cost that pool members incur when writing assessable voluntary business.
For policy year 2018, the Residual Market Burden is estimated to be 0.78%. The bulletin explains how the estimate was determined.
Read the full details here: SPECIAL BULLETIN NO. 04-19: RESIDUAL MARKET LOSS RATIO AND BURDEN ESTIMATE