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Canada’s only national labour and employment law firm. With seven offices nationwide and lawyers licensed in every province and territory, we deliver strategic advice, practical solutions and immediate crisis management to employers across Canada.

A respected advocate, leader, and colleague.

Honouring the Legacy of Mark D. Contini

Former Partner and Managing Partner whose leadership and contributions continue to guide our Firm.

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Firm insights

In A Flash

Ontario Government Seeking Public Input on Contractor Liability for Unpaid Wages Owed to Employees of Subcontractors

Currently, under Ontario’s workplace laws, if a subcontractor fails to pay its employees the wages they are owed, the employees or their trade union must seek recourse against the subcontractor itself. This may involve filing a grievance under an applicable collective agreement, commencing a court action, or lodging a complaint with the Ministry of Labour, … Continued

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OHS & Workers’ Compensation Advisor

Public Procurers Beware: Ontario to Enforce Equivalent Treatment of OHS Management Systems

The Working for Workers Seven Act, 2025 (“WWA7”) became law on November 27, 2025. It amended section 7.6.1 of the OHSA by adding the Equivalency Requirement – the details of which would be subject to the OHSA’s regulations.[1]  The WWA7 also empowered Ministry of Labour, Immigration, Training and Skills Development inspectors to issue Administrative Monetary … Continued

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OHS & Workers’ Compensation Advisor

Filling in (Some of) the Gaps: Ontario OHSA Administrative Monetary Penalties Regulation

In November 2025 the Ontario government empowered Occupational Health and Safety Act (“OHSA”) inspectors to issue Administrative Monetary Penalties (AMPs) for violations of the OHSA and its regulations – a significant enforcement change. However, at that time, most of the relevant details were left to a pending regulation. In our previous Advisor, we identified numerous … Continued

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Announcement

Mathews Dinsdale Welcomes New Lawyers and Expands National Workplace Law Practice. Read More.

Recognition

The Best Lawyers™ in Canada 2026 recognizes 33 Mathews Dinsdale lawyers as leaders in labour, employment, business immigration, workers' compensation, construction, corporate litigation, and health & safety law.

Announcement

Mathews Dinsdale is pleased to announce that Kaelyn Burns joined our Vancouver office as an Associate. Welcome to our team!

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Recognition

Mathews Dinsdale and our lawyers are consistently recognized as leaders in workplace law by national and international legal and business publications.

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

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Proud to be the Canadian member of Ius Laboris, the world’s leading alliance of legal service providers in labour, employment and pension law.