@redscroll @scottsantens It's the same as any other study of productivity or the like - someone in power commissions a study by qualified experts, provides the data and the experimental subjects, then disavows the results as "ivory tower academia" when the inevitable result is "it's better for everybody if you treat people better".
Increased pay, vacation, benefits, welfare/safety net, it's all in the same "we all know the right thing to do but the people in power don't care" category.