Where does the "Benefit Amount" come from on the R073433 Cdn Workers Comp Report?

We are looking at the R073433 Workers Comp report and there are amounts appearing under the "Benefit Amount" column on the report which reduce the Reportable Amount (along with the amount from the "Excludable" column) that impacts the amount of Workers Comp taken for the EE here in Canada. Where does the "Benefit Amount" come from? Thanks.