Consent is murky at best when there's a large power discrepancy between two co-workers. See: everything that's been going on with Hollywood in the past couple of years
The law has no concept of "large power discrepancy" affecting the notion of whether sex is legal or not, if there's no violence or force involved.
The attempts in recent years by a small group of feminists to broaden the definition of non-consensual sex to include "I had sex with that rich guy because he could give me an attractive job but later regretted it" just degrades everything, especially women. It causes people to stop believing them when they say they were coerced by a powerful man. After all, Weinstein's accusers settled, didn't they? And his ex employers picked up the legal bills. Rumoured to be because he had tons of evidence that the complainants had willingly accepted their side of the "deals" and that such arrangements were commonplace throughout the industry.