Section 49 — Canada Labour Code: Notice to bargain to renew or revise a collective agreement or enter a new collective agreement

Either party to a collective agreement may, within the period of four months immediately preceding the date of expiration of the term of the collective agreement, or within the longer period that may be provided for in the collective agreement, by notice, require the other party to the collective agreement to commence collective bargaining for the purpose of renewing or revising the collective agreement or entering into a new collective agreement. Where a collective agreement provides that any provision of the collective agreement may be revised during the term of the collective agreement, a party entitled to do so by the collective agreement may, by notice, require the other party to commence collective bargaining for the purpose of revising the provision.