Well, it is somewhat tacky to blatantly objectify employees--it tends to make one sound like a pompous, entitled jerk. But that's a much shallower sort of objection than what Alicorn is raising. At a general social level, objectifying in the context of employement is on the "acceptable" side, whereas objectifying in the context of personal relationships, especially sexual relationships, straddles the line and is probably drifting toward "unacceptable".

As for me, since I figure it's heading that way, I'm getting in on the ground floor on avoiding such language, so that when I'm 70 years old I don't embarrass younger family members with quaint objectifying language.