But your last sentence basically obliterates the reasoning behind the rest of your post: I believe overworked/underpaid/mistreated people are cheaper to employ

But your last sentence basically obliterates the reasoning behind the rest of your post: I believe overworked/underpaid/mistreated people are cheaper to employ in the short term, but I don't believe that offsets the decreased effectiveness of them being, well, overworked, underpaid and mistreated.