Tessier Ltée v. Québec (Commission de la santé et de la sécurité du travail), 2012 SCC 23

In 2012, represented Tessier Ltd. before the Supreme Court of Canada in a significant decision regarding division of powers in labour relations matters. The highest court in the country ruled that the federal government has jurisdiction to regulate employment in two circumstances. First, Parliament has direct authority when the employment relates to a work, undertaking, or business within federal legislative authority. Second, Parliament has jurisdiction when the employment is an integral part of a federally regulated undertaking.