Canada Industrial Relations Board Regulations, 2012

13 (1) A response or a request to intervene to a proceeding must be filed

• (a) in the case of an application for certification, within 10 days after receiving notice of the application; or

• (b) in the case of any other application, within 15 days after receiving notice of the application.

(2) A reply must be filed within 10 days of the filing of the response.

(3) A response to a request to intervene must be filed within 10 days of the filing of the request to intervene.

(4) A request for an extension of time to respond, reply or request to intervene must be made in writing, setting out the grounds for the requested extension.