23(1)An employee organization intending to apply for certification as the bargaining agent of any employees who may be affected by an application shall file an intervener’s application in quadruplicate in Form R-7A of Schedule A not later than ten days after the filing of the application for certification.

23(2)Section 18 applies mutatis mutandis to an intervener’s application.

23(3)Section 19 does not apply to an intervener’s application unless the Board so directs.

23(4)Section 20 applies to an intervener’s application in whole or in part as may be directed by the Board.