Division I - Collective Bargaining — Time limit

the parties or their authorized representatives shall, without delay, and no later than 20 clear days after the notice was given or a further time that the parties may agree upon, meet and begin to bargain collectively in good faith and make a reasonable effort to conclude a renewal or revision of the agreement or a new collective agreement; and

where a renewal or revision of the agreement or a new collective agreement has not been concluded before expiry of the term or termination of the collective agreement, then, unless he or she receives the prior written approval of the board, the employer shall not, without the written consent of the bargaining agent certified or recognized in respect of the appropriate unit, decrease rates of wages or alter other terms or conditions of employment in effect immediately before the expiry or termination provided for in the agreement, until

a renewal or revision of the agreement on a new collective agreement has been concluded, (ii) a conciliation officer has been appointed to try to bring about an agreement between the parties, and 15 days have elapsed from the date on which the report of the conciliation officer was received by the minister and a conciliation board has not been appointed, or (iii) a conciliation board has been appointed to try to bring about an agreement between the parties and 7 days have elapsed from the date in which the report of the conciliation board was received by the minister, whichever first occurs.