Olivier is a partner in Osler’s National Tax Group based in Toronto and Montréal. His practice focuses on tax litigation and controversy, advising Canadian and international clients on complex tax audits and disputes both in and out of court.

As a litigator, he regularly appears before both the federal and Québec courts on tax matters, including at the appellate level.

A thought leader in Canadian tax law and former governor of the Canadian Tax Foundation, Oliver regularly contributes to the tax community through speaking and writing on significant tax issues. He was named a Lexpert Rising Star in 2020.

Prior to joining Osler, Olivier led the affiliated law firm of a national accounting firm as well as its national tax disputes practice.