Well, "professionalism" is pretty much the black-hole escape valve of HR. It has to do with your hair style, your political beliefs, your religious beliefs, how

Well, "professionalism" is pretty much the black-hole escape valve of HR. It has to do with your hair style, your political beliefs, your religious beliefs, how much (or how little) you drink alcohol, where you choose to live, whether or not you are married, whether or not you have children, how much maternity/paternity leave you request, what types of clothes you wear, how much (or how little) you make jokes, what type of car you drive, and on very rare occasion, how you conduct yourself and treat colleagues while working. Basically, any time the HR apparatus wants to disapprove of you, it will simply invent a reason to do so, and then turn around and say that the invented reason is a part of "professionalism" or "being a team player". In fact, in a Moral Mazes sense, this is precisely why there is an HR apparatus in the first place -- exactly to manufacture plausible and legally defensible excuses for defending arbitrary (and often illegal and irrational) whims of executives.