You have finally landed your dream job that anyone and everyone would kill for. Your colleagues and workplace are fantastic but something about your boss, that you can't quite put your finger on, has been bothering you. One or more of these phenomenons may drive you nuts if not dealt with on time.
When your boss is not a good leader He may have all the degrees in the world, but that doesn't make him a good leader if he's indecisive, doesn't appreciate you enough, practices nepotism or picks favourites. He may even go as far as taking credit for something you have achieved and is quick to find someone (and on many occasions that someone is you) to blame when things hit south. Experiencing any of these could seriously make you feel let down and lose focus of your corporate objectives.
When the two of you have contradicting ethical values If you like transparency but your boss takes the opposite route, you may have some serious trouble dealing with these differences. No need to frustrate yourself by sticking around. Find someone better to work for.
When there's no room for improvement The pay might be great but if your boss isn't knowledgeable enough and there's nothing you can learn from him, this could be a major downer.
When he doesn't know where to draw boundaries A boss is someone the employees look up to; someone who is well-balanced in terms of respecting personal space and keeping things professional. It could be considered seriously unprofessional if your boss is making inappropriate jokes or going overboard with those compliments about your long legs. No one likes a grumpy cat for sure, but an over-friendly boss who passes inappropriate comments is equally unbecoming.
When he has anger management issues Your heart skips a beat every time your boss is around, not because they're sweeping you off your feet with their suave and smooth moves (which by the way, would be immensely inappropriate even if they did and you should in no way condone it), but because they lose their temper every two minutes and throw things at you. They may even set unrealistic deadlines to put you under a lot of pressure just because s/he can. Abuse of authority and bullying employees are not news anymore, are they?