Subsection 1: Binding force

Contracts may only be modified or revoked with the mutual consent of the parties, or for reasons permitted by law.

Contracts are binding not only on what is expressed in them, but also on all the consequences that equity, usage or the law give them.

If a change in circumstances unforeseeable at the time the contract was concluded makes performance excessively onerous for a party who had not agreed to assume the risk, that party may ask its co-contractor to renegotiate the contract. It continues to perform its obligations during the renegotiation. If renegotiation is refused or fails, the parties may agree to terminate the contract, on the date and subject to the conditions they…