Versions of s. 53(1)
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Where a bargaining agent alleges that sections 52, 54 and 55 apply to an employer in respect of an alleged technological change and that the employer has failed to comply with section 52, the bargaining agent may, not later than thirty days after the bargaining agent became aware, or in the opinion of the Board ought to have become aware, of the failure of the employer to comply with section 52, apply to the Board for an order determining the matters so alleged.