The firm: « hub of contract » .Those singles words shed light on the link between economy (field of the firm) and the law (field of the contract). The manager during the decision process must care about the rules set up by the legal system. We will give illustration of this confrontation between economy and law further in this essay.

The rule of law is usually constraining for the firm, the firm must comply to it . The law is first a part of the firm’s environment, but also a parameter of the internal organization of this firm. A strategic vision of law is emerging , the legal frame is providing boarder to the possibilities of the firm .This affirmation is even more obvious when it comes to contract law .the contract organize and provide a structure to commercial relationship. The firm is based on contractual relationship which set up right and duty .

The rule of law is usually constraining for the firm, the firm must comply to it . The law is first a partto contract law .the contract organize and provide a structure to commercial relationship. The firm is based on contractual relationship which set up right and duty. The contract are a way to structure relationship within the firm , but also with commercial partners.

The relationship between the group Peugeot Citroën SA represented by its supply department and suppliers are organized by contract set up by the legal department .The supply department role is covering many functions : consultation , negotiation , choice of provider , product development .For each of this function contractual documents are required . to the legal department , the need of the supply department will lead to changes in the legal documentation .The law organizational base of the firm is also structured by those needs