Companies are subject to a very substantial control. The detailed analysis of the respective functions of the various company's governing bodies, shows that in reality the management's control and the supervision's control join in a single definition. This definition applies to anyone related with the company's life and allows to avoid any liability for the control carried out by people who only have a right of information. If control must be conceived as a single operation the question rises of the multitude of liability schemes which applies on the holders of a mission of control. The study of the conditions and the scheme of their liability allow to notice, beyond, the differences of scheme, the conditions of application : the fault, the damage and the causal link , are the same, whatever its ground. It is then allowed to criticize the differences of liability schemes applying on manager and supervisor and to propose to go back to some coherence by a revision, which can be qualified as small, of the liability resulting from the control.