In this article, we study the incentives of a manager implicated in a cartel. We apply a cost-benefit analysis, relating to the decision of starting and/or remaining in a cartel, at an individual level, including psychological and behavioral factors. Then we study how to dissuade him/her from colluding. Beyond administrative fines and detection by competition authorities, we analyse solutions inside the firm which contribute to better deter managers from engaging into these illegal prac - tices, and the role of public policy, in the broad sense of the term, in preventing these behaviors.