Mr Matthew L.O. Certosimo, C.S. > Borden Ladner Gervais LLP > Toronto, Canada > Lawyer Profile

Borden Ladner Gervais LLP
Bay Adelaide Centre, East Tower
22 Adelaide Street West, Suite 3400
Toronto, ON M5H 4E3
Matthew L.O. Certosimo, C.S. photo

Work Department

Labour and Employment




Certified by The Law Society of Ontario as a Specialist in Labour Law. Partner and former national leader (2011–2016) of BLG’s Labour and Employment Group. Frequently appears before the courts including the appellate level. Advises and acts on behalf of private and public sector employers in labour relations, employment law, including wrongful dismissal litigation, labour arbitrations, collective bargaining, human rights complaints and charges under the Occupational Health and Safety Act. Chair and speaker at numerous labour and employment law conferences. Called to the Ontario Bar in 1995. Recipient of the 2022 Ontario Bar Association Randall Echlin Award for Excellence in Labour and Employment Law. Co-author of Just Cause: The Law of Summary Dismissal in Canada (Canada Law Book).




Member of the Canadian Bar Association (Ontario); Member of the American Bar Association.


LLB, Dalhousie University, 1993

Lawyer Rankings

Canada > Labour and employment

(Leading individuals)

Matthew CertosimoBorden Ladner Gervais LLP

From well-staffed platforms in key Canadian provinces, Borden Ladner Gervais LLP provides a full-service national labour and employment practice, which frequently secures key roles in precedent-setting matters. In a recent example, the firm represented Dell Canada in a landmark case discussing the vesting of long-term incentives. Toronto-based Jeffrey Mitchell led on the Dell Canada work; other recommended practitioners in Toronto include labour and employment litigator Matthew Certosimo and Clifford Hart, who handles a mix of contentious and advisory matters. Montreal remains the group’s most high-profile seat and houses several key partners, including seasoned senior counsel Danny Kaufer, national department head André Royer and Maryse Tremblay, who brings to bear extensive expertise in advising federally regulated employers. Other noted names include Vancouver-based Shelley-Mae Mitchell, who handles an array of labour, employment and human rights law, and dual UK- and Alberta-qualified Duncan Marsden in Calgary.