Matthew L.O. Certosimo

C.S.

Associé

Bureau
Toronto
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Testimonials

Presentations & Publications

Beyond Our Walls

Professional Involvement

  • Member of the Canadian Bar Association (Ontario)
  • Member of the American Bar Association
  • Past member, Board of Governors, Wilfrid Laurier University
  • Past member, Justices of the Peace Appointments Advisory Committee, Ministry of the Attorney General (Ontario)

Awards & Recognition

  • Recognized in the 2025 edition (and since 2010) of The Best Lawyers in Canada® (Labour and Employment Law).
  • Recognized in the 2025 edition (and since 2016) of Chambers Canada — Canada's Leading Lawyers for Business (Employment & Labour: Ontario) and in the 2020 edition (Employment & Labour: Nationwide).
    • Excels in representing employers across both the public and private sectors…He continues to represent major national clients in the full gamut of labour and employment matters. He is also adept at grievance arbitrations and collective bargaining.
  • Recognized in the 2024 edition (and since 2009) of Lexpert®/American Lawyer Guide to the Leading 500 Lawyers in Canada (Employment Law).
  • Recognized in the 2025 edition (and since 2007) of The Canadian Legal Lexpert® Directory (Employment Law, Labour Relations) and the 2025, 2024, 2021 editions (and since 2007) for (Workers' Compensation, Workplace Human Rights).
  • Recognized in the 2025 edition (and since 2022) of Lexology Index (formerly known as Who's Who Legal: Canada) (Labour, Employment & Benefits). He is also recognized in the 2024 edition as "Global Elite Thought Leader: Labour & Employment" and "Thought Leaders - Labour & Employment"
  • Recognized as a 2023 Thomson Reuters Stand-out Lawyer
  • Recognized in the 2023 edition (and since 2015) of Legal 500 Canada as a Leading individual (Labour & Employment).
  • Recipient of the Ontario Bar Association Randall Echlin Award for Excellence in Labour and Employment Law for 2022 (Awarded in March, 2023)
  • Recognized in the 2019 edition (and since 2016) of Benchmark Canada - The Definitive Guide to Canada's Leading Litigation Firms & Attorneys as a "Local Litigation Star: Ontario" and a "Litigation Star: Labour and Employment."

Bar Admission & Education

  • Ontario, 1995
  • LLB, Université Dalhousie, 1993
  • BA (Hons.), Wilfrid Laurier University, 1988