The applicant, a union member, alleged that his union violated section 75 of the Labour Relations Act by suspending him and revoking his union seniority for non-payment of dues.
The union's hiring hall rules dictated that a second suspension within five years resulted in a loss of seniority, which severely impacted employment opportunities.
The Board found that while the union's rules were not inherently unreasonable, the union acted arbitrarily by failing to provide the applicant with a clear, final warning before imposing such a severe penalty, especially given its history of not strictly enforcing its bylaws.
The Board directed the union to reinstate the applicant's seniority.