My experience is that these type of people are basically incorrigible. If/when colleagues hint as such, it results in response to the tune of "I am ambitious an

My experience is that these type of people are basically incorrigible. If/when colleagues hint as such, it results in response to the tune of "I am ambitious and want to demonstrate my work; if you don't, feel free to manage your time the way you like" (it may be packaged in softer wrapping but the point is still the same). Unfortunately that is a shitty but hard to combat argument without increasing acrimony. Management usually doesn't want to discourage such behaviour because it fits perfectly into their all-too-common willingness to exploit such tendencies by throwing morsels of acknowledgement/praise to extract more work by feeding this hunger for visibility. It is rare that the work-life balance culture is widely consistent and respected by everyone including management and even if that were the case, any advise from management to tone it down generally results in such people sulking and continuing with their behaviour in more covert ways that gives rise to underhanded politics. All this is amplified if this kind of person doesn't want to leave - basically a fish polluting a pond personified.