If you just shaved it one day. Your job can't fire you, unless there is something in your contract that allows them to. Your spouse won't leave you. At worst, some people may crack a couple jokes, and then go away, right? In the end, at some level isn't it just another haircut, with its pluses and minuses? Yes, this is an attempt to rationalize and help others realize it won't be the end of the world if you shave your head.