Principles of International Commercial Contracts, 1994 - UNIDROIT
Chapter 6 - Performance
Section 1 - Performance in General
Article 6.1.5 - Earlier Performance
(1) The obligee may reject an earlier performance unless it has no legitimate interest in so doing.
(2) Acceptability by a party of an earlier performance does not affect the time for the performance of its own obligations if that time has been fixed irrespective of the performance of the other party?s obligations.
(3) Additional expenses caused to the obligee by earlier performance are to be borne by the obligor, without prejudice to any other remedy.