LAWYER PROFILE
Matthew Sammon

Matthew Sammon

Canada 2026

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Chambers ranking badge

Ranked in 4 practice areas

About

Provided by Lenczner Slaght

Practice Areas

Matthew is one of the most experienced civil trial lawyers of his generation, having conducted trials, applications, and arbitrations in myriad areas, including infrastructure and construction, complex commercial proceedings, insurance, medical litigation, professional liability, and employment disputes. His roster of clients has included large and mid-sized corporations across a wide range of sectors, including construction, financial services, insurance, banking, telecommunications, retail, health care, manufacturing, hospitality, and oil and gas. He also regularly acts for executives and other individuals in civil and regulatory disputes. Matthew's experience as lead counsel for constructors in complex infrastructure and construction disputes in Ontario and other jurisdictions has earned him recognition as one of Canada's leading infrastructure lawyers. Matthew also has deep experience in professional regulation and medical malpractice litigation, appearing regularly as lead counsel in complex medical litigation and regulatory proceedings.

Chambers Review

Provided by Chambers

Chambers Canada Guide

Healthcare: Contentious - Nationwide - Canada

Band 3
Band 3

Individual Editorial

Matthew Sammon in Toronto has significant experience in representing physicians in medical malpractice suits, as well as before disciplinary bodies.

Construction - Nationwide - Canada

Band 5
Band 5

Individual Editorial

Matthew Sammon is highlighted for his ability to represent clients in a broad array of disputes arising from complex construction and infrastructure projects. He handles construction lien work, as well as allegations of design and construction deficiencies. He is based in Lenczner Slaght's Toronto office.

Employment & Labour - Ontario

Band 6
Band 6

Individual Editorial

Matthew Sammon is an acclaimed litigator at Lenczner Slaght in Toronto, who is especially well regarded for his strength as counsel to both employers and plaintiffs in employment disputes. He is particularly skilled in representing executives; his experience encompasses wrongful dismissal claims and breaches of contract.

Employment & Labour: Non-Unionised Employees - Ontario

Spotlight
Spotlight

Individual Editorial

Matthew Sammon is an acclaimed litigator at Lenczner Slaght in Toronto, who is especially well regarded for his strength as counsel to both employers and plaintiffs in employment disputes. He is particularly skilled in representing executives; his experience encompasses wrongful dismissal claims and breaches of contract.

Strengths

Provided by Chambers

  • Matthew is perhaps one of the smartest and most skilled lawyers I have had the pleasure of working with.

    Healthcare: ContentiousChambers Canada Guide
  • Matthew Sammon is first-rate.

    Healthcare: ContentiousChambers Canada Guide
  • He is a brilliant litigator.

    ConstructionChambers Canada Guide
  • Matt is very straight to the point, firm in his position and delivers a solid message with respect to advice.

    ConstructionChambers Canada Guide
  • Matthew is very knowledgeable on subject matter.

    ConstructionChambers Canada Guide
  • He is versatile and has both a strategic and detail-oriented mind.

    ConstructionChambers Canada Guide

Ranked Individuals at Lenczner Slaght (38)

Nationwide - Canada

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