Ch.5 Content, third party rights and conditions, s.1: Content, Art.5.1.3
This commentary focuses on Article 5.1.3 of the UNIDROIT Principles of International Commercial Contracts (PICC) concerning co-operation between the parties. Art 5.1.3 imposes a general duty of co-operation on the parties. The duty applies to all types of contract, although it is particularly important in long-term contractual relationships where the parties have to collaborate throughout the life of the contract to make it work. Art 5.1.3 requires each party to cooperate with the other party when such co-operation may reasonably be expected for the performance of that party's obligations. This commentary discusses limits to the duty of co-operation, legal consequences of a violation of the duty of co-operation, and burden of proof relating to the duty of co-operation.