There are really just two parts of this that work reliably and they are sufficient on their own: * Listen carefully for badmouthing of previous jobs and co-wor

There are really just two parts of this that work reliably and they are sufficient on their own: * Listen carefully for badmouthing of previous jobs and co-workers. With a–holes, you will hear a lot of answers that amount to “everyone was stupid but me,” “no one wanted to hear the truth,” etc. * And, if you do happen to hire an a–hole, act immediately. It can be that simple: trust your instincts when hiring, and ask people to leave if they turn out not to be a good fit. Keeping them on board is a waste of their time too.