How to spot a psychopath in the office
6 November 2013 Last updated at 11:16 GMT
The cold, calculating psychopath, the narcissist or the game-playing, manipulative Machiavellian.
According to clinical psychologist-turned-author, Oliver James, these are the three main types of people that can be found in your office.
Sharanjit Leyl asked Mr James how to spot these characters in the office.