About Jeffrey

Jeffrey Sack, K.C. practices labour law and acts as a union nominee on interest arbitration boards. As a litigator he argued the Lavigne case in the Supreme Court of Canada, upholding the constitutional validity of the Rand formula, and the first case upholding the right to strike under the Charter. He is an adjunct professor teaching international labour law at the University of Toronto and Associate Editor of the Canadian Labour and Employment Law Journal.

Practice areas

Employment & Labour Law

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This listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm Jeffrey Sack’s licence and standing in the Law Society of Ontario directory ↗

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