316. The provisions of a collective agreement, of an arbitration award in lieu thereof or of an order or decree imposing a collective agreement and the terms of a pension plan applicable to employees governed by the agreement, award, order or decree, in force on 1 January 1990, which are incompatible with the provisions of this Act shall prevail over the provisions of this Act until the date of expiry of the agreement or award or until the date of expiry, extension or renewal of the order or decree.
The Act respecting supplemental pension plans (chapter R-17) shall continue, for the same period, to apply to the plan, to the extent that the employees concerned are governed by the said collective agreement, award, order or decree.