What is the workers' compensation insurance rate for workers of roofing contractor in Massachusetts knowing that the contractor has an EMR = 1.1? Use the RS Means R013113-60. a) 30.010% b) 30.700% c) 30.393% d) 30.981% R013113-60 Workers' Compensation Insurance Rates by Trade The table below tabulates the national averages for workers' compensation the "Workers' Compensation" cost by \% of total labor cost, to be added for insurance rates by trade and type of building. The average "Insurance each trade by building type to determine the weighted average workers' Rate" is multiplied bv the "\% of Building Cost" for each trade. This produces combensation rate for the building tvpes analvzed. Workers' Compensation Insurance Rates by States The table below lists the weighted average Workers' Compensation base rate for each state with a factor comparing this with the national average of 12.6%