The union filed a grievance and an unfair labour practice complaint alleging that local employers and the Mechanical Contractors Association of Windsor (MCAW) breached the provincial collective agreement and the Labour Relations Act by refusing to implement provincially-negotiated changes to a local pension and welfare benefit plan.
The MCAW argued that the plan pre-dated provincial bargaining, operated outside the collective agreement, and that the Board should defer to the Courts or the plan's trust dispute mechanism.
The Board declined to defer, finding that the dispute engaged its exclusive jurisdiction over the statutory scheme and its role as the designated arbitrator for construction industry collective agreements.
The Board directed that the matters be listed for a hearing on the merits.