30. Any vacancy in a committee must, not later than 30 days after the committee is notified thereof, be filled by the certified association, the group of workers not represented by a certified association or the employer that appointed the committee member to whom the vacancy is attributable.
Where a certified association or group of workers not represented by a certified association fails to fill a vacancy during the prescribed period, the post left vacant is filled in accordance with section 10, 11 or 12, as long as the appointment has not been made.