Section 52 — Employment Relations Act 2000: When collective agreement comes into force and expires

52 When collective agreement comes into force and expires (1) A collective agreement comes into force on— (a) the date specified in the agreement as the date on which it comes into force; or (b) if no such date is specified, the date on which the last party to the agreement, or its duly authorised representative, signed the agreement. (2) A collective agreement may provide that 1 or more of its provisions have effect from 1 or more dates before or after the date on which the agreement comes into force. (3) A collective agreement expires on the close of the earliest of the following dates: (a) the date specified in the agreement as the date on which the agreement expires: (b) the date on which an event occurs, being an event that is specified by the agreement as an event on the occurrence of which the agreement expires: (c) the date that is the third anniversary of the agreement coming into force. (4) Subsection (3) applies subject to section 53 .