Stephen A. McArthur

Partner Toronto, T: 416.869.2501 C: 416.716.8548 F: 416.862.8247

Corinne Webster Assistant 416.862.8280 x252


Bar admission

Law Society of Ontario


Osgoode Hall Law School, LL.M.
Queen’s University, LL.B.
York University, B.A.

Membership and affiliations

Canadian Bar Association
Hamilton Law Association
Ontario Bar Association


Stephen is a partner in our Toronto office. He acts as Counsel for many local and Provincial Construction Associations, individual contractors and a range of other employers. In this capacity Stephen provides advice and advocacy in collective bargaining; before the Ontario Labour Relations Board and before various adjudicative bodies and Courts throughout Ontario.

Stephen is a co- author of several labour and employment law texts, including “Canadian Construction Labour & Employment Law” (LexisNexis Canada Inc.); Practice Guides for Occupational Health and Safety and The Purchase and Sale of a Business (Carswell). Stephen is rated as “consistently recommended” in the Canadian Legal Lexpert Directory and is also listed by Best Lawyers in Canada as a leader in Labour and Employment Law in Canada.

Prior to attending law school, Stephen spent six years in the automotive industry as co-founder of an engine components manufacturing company. Sandco Automotive Limited grew from a small two-person business to become a drive train parts supplier to OEM with over 200 employees in Ontario.

Before joining Mathews Dinsdale Stephen was for 25 years the founding partner and principal of a labour and employment law firm in Hamilton, Ontario.

Print bio


Our complimentary webinars address the practical and legal issues for Canadian employers.

View our Webinars