To find some approximation of the truth, ask state/federal agencies and organizations that are at odds, and those in favor, of compensating people. From their statements you will get the correct questions to ask everybody.
You could also ask the forum at expertlaw. They helped me once on employment law.
Workman's Comp laws may be something like the U.S. Tax Code; not rational or logical and a patchwork of compromises worked out by politicians with various agendas who owed favors to God knows who.
And that's only what's on paper. What actually happens is a whole 'nother thing.
If you want to see the people from the above-mentioned agencies and orgs run from you so fast that the windows are sucked out of their buildings, ask for sworn statements.