Canada Industrial Relations Board Regulations, 2012

24 (1) Any individual who has been authorized by the Board under paragraph 16(k) of the Code may, in relation to a proceeding before the Board, issue a summons requiring an individual to appear, give evidence under oath and produce documents and things.

(2) With the exception of a matter to which the expedited process applies, the summons referred to in subsection (1) must be served no later than five days before the hearing.