NYC is kind of weird like that. Most of the country doesn't have unionized nurses, and ours were not only not unionized, but our hospital had a reputation as the best place to work in the state income-wise and so far as environment and staffing. So they weren't too keen on getting fired. Not that they wouldn't get aggressive, but this guy you just couldn't get aggressive with- he was a classic case of Asperger's, he literally wouldn't understand you ripping into him, he'd just be like, "I don't understand why you're saying these things, but I assume I must have said something to offend you. That's your problem to deal with I guess." And then maximum shruggery
So they just put in reports on him every time for years and eventually they had enough of a case to ask him to leave.