24(1)Where a trade union or council of trade unions fails to give the employer notice under section 32 within thirty days following certification or within thirty days following the date of the termination of a collective agreement when section 21 applies, or where a trade union or council of trade unions fails to give notice under section 33, and no such notice is given by the employer, the Board may, upon the application of the employer, another trade union or council of trade unions, or of any of the employees in the bargaining unit, and with or without a representation vote, declare that the trade union or council of trade unions no longer represents the employees in the bargaining unit.

24(2)Where a trade union or council of trade unions that has given notice under section 32 or 33, or that has received notice under section 33, fails to commence to bargain within thirty days from the giving of the notice, or after having commenced to bargain, but before the Minister has appointed a conciliation officer or appointed a mediator under section 70, allows a period of thirty days to elapse during which it has not sought to bargain, the Board may, upon the application of the employer, or another trade union or council of trade unions, or of any of the employees in the bargaining unit, and with or without a representation vote, declare that the trade union or council of trade unions no longer represents the employees in the bargaining unit.

24(3)The trade union or council of trade unions and the employer concerned may for the purposes of this section agree in writing to an extension of the times prescribed in subsection (1) or (2) in which event subsection (1) and (2) apply from the elapse of the extended time.