In case I was unclear, the taboo is real, and has sociological explanations. I'm just saying there's an economic incentive behind it that favors businesses over employees.
Interesting, do you know the sociological explanations, or know what I can read to learn more? (As a sheer guess, I'd imagine it's part of professional conditioning, like that described in Jeff Schmidt's _Disciplined Minds_. Working-class people might not have this taboo. But I don't know.)