- NOTICE PRIOR TO EXPIRY. G 2.01 NOTICE TO BARGAIN Either party to the Collective Agreement may at any time within four (4) months immediately preceding the date of expiry of the Agreement, by written notice, require the other party to the Agreement to commence collective bargaining. Where no notice is given, both parties shall be deemed to have given notice under this Article, sixty (60) days prior to the date of expiry of the Agreement.