Under German law, the appointment as managing director and the employment contract are separate legal relationships between the company and its managing director. Consequently, the dismissal of a managing director does not necessarily terminate his future claims for remuneration. Companies therefore often try to solve this problem by the implementation of contractual clauses, stating that the dismissal of the managing director either automatically terminates the employment contract or gives the company the right to terminate it for cause. This thesis deals with the effectiveness of those clauses with regard to the principle of separation, the employment law and the laws of the general terms and conditions.