One of the most important managerial roles is negotiating in intra- and inter-organizational settings. The course aims to improve the understanding of conflict and negotiations among participants as well as practicing their negotiating skills. The course creates the opportunity to identify individual strengths and weaknesses in the negotiator role by practicing and discussing simulation games. At the same time the course provides a conceptual framework to diagnose problems in negotiations. The important part of the course are questions connected with sustainability and ethics, particularly in situation in which cooperation of negotiating parties can be harmful from the point of view of broader social and economic environment.