The respondent employee sued his union in the Manitoba Court of Queen's Bench, alleging a breach of the duty of fair representation after the union pursued grievances on behalf of other employees that resulted in the respondent losing a promotion.
The trial judge dismissed the action, but the Court of Appeal allowed it.
The Supreme Court of Canada allowed the union's appeal, holding that the ordinary courts lack jurisdiction to entertain the claim.
The comprehensive legislative scheme of the Canada Labour Code, which includes a statutory duty of fair representation and a privative clause, ousts the common law duty by necessary implication and assigns exclusive jurisdiction to the Canada Labour Relations Board.