This article explains who Corporate Psychopaths are, and some of the processes by which they stimulate counterproductive work behaviour among employees. The article hypothesizes that conflict and bullying will be higher, that employee affective well-being will be lower and that frequencies of counterproductive work behaviour will also be higher in the presence of Corporate Psychopaths. Research was conducted among 304 respondents in Britain in 2011, using a psychopathy scale embedded in a self-completion management survey. The article concludes that Corporate Psychopaths (...) have large and significant impacts on conflict and bullying and employee affective well-being; these have large and significant impacts on counterproductive work behaviour. There is no difference between male and female degrees of negative reaction to the presence of managers who are Corporate Psychopaths. (shrink)