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  • 2019 BestLawyers_Firm_Badge

    Best lawyers 2019

    Donna Shier, Marc McAree, Julie Abouchar and Charles Birchall have been selected by their peers for inclusion in the 2019 edition of the Best Lawyers in Canada© in the field of Environmental Law. John Donihee and Julie Abouchar are recognized by Best Lawyers in Canada© for Aboriginal Law. Julie Abouchar is also recognized by Best Lawyers in Canada© for Energy Law.

  • 2019-LR-Lawyer

    The Canadian Legal Lexpert Directory® ranks Willms & Shier Environmental Lawyers LLP “Most Frequently Recommended” as one of Toronto’s Leading Environmental Law Firms. Marc McAree and Charles Birchall are rated “Most Frequently Recommended”, Donna Shier and Julie Abouchar are rated “Consistently Recommended” and John Georgakopoulos is rated “Repeatedly Recommended” for Environmental Law.  Joanna Vince is included as a “Leading Lawyer to Watch” for Environmental Law. Julie Abouchar is rated “Most Frequently Recommended”, Charles Birchall is rated “Consistently Recommended” and John Donihee is rated “Repeatedly Recommended” for Indigenous Law.

  • Best Lawyers_Lawyer_Badge_MM

    Marc McAree is named LAWYER OF THE YEAR for 2019

    Marc McAree is named "Lawyer of the Year" for Environmental Law in Toronto in the 2019 edition of the Best Lawyers in Canada©.

  • 2019 Lexpert-ALM-ranked_Lawyer_Badge

    Marc McAree is rated Most Frequently Recommended in the 2019 Lexpert®/American Lawyer Guide To The Leading 500 Lawyers in Canada.

Willms & Shier Environmental Lawyers LLP represents clients on a full range of environment, Aboriginal and energy law issues.  Our dedicated legal team includes seven Environmental Law Specialists certified by the Law Society of Ontario and lawyers with backgrounds in environmental science, geology and environmental planning.

For more than 40 years, industry and individual clients, business lawyers, environmental professionals, Aboriginal communities and governments have benefitted from our innovative, practical solutions and extensive knowledge in a broad range of practice areas:

ENVIRONMENTAL LAW - corporate due diligence and risk management, brownfields strategy and contaminated site remediation, environmental assessment and approvals, air emissions, odour, noise, waste, wildlife and water law


  • Environmental Civil Litigation - prosecution or defence of environmental lawsuits
  • Environmental Regulatory Defence of Prosecutions - defence of quasi-criminal environmental prosecutions by regulatory authorities and managing regulatory investigations
  • Environmental Appeals - appeals of regulatory orders and approvals to administrative tribunals and government decision-makers

ABORIGINAL LAW - Aboriginal consultation, resource sector agreements, capacity support for Aboriginal groups and businesses, dispute resolution, litigation and training

ENERGY - renewable energy and transmission projects, regulatory approvals and appearances before energy boards

NORTHERN - environmental impact assessments, land and water regulation, wildlife law and management, water law and policy, land claims implementation and Aboriginal law North of 60

"Willms & Shier is a bluechip environmental law firm."

Judge of the Ontario Superior Court of Justice

Willms & Shier is committed to keeping you up-to-date on the latest developments in environmental, Aboriginal and energy law.

Explore our range of publications and subscribe to our e-publications to keep you informed:

Speaking Engagements

Willms & Shier lawyers are frequent and highly-valued speakers at many industry and legal conference across the country. Click here to view all of our upcoming speaking engagements.

In-House Workshops & Seminars

We are pleased to develop workshops/seminars on a range of topics for clients that qualify for Continuing Professional Development (CPD) and Continuing Legal Education (CLE). Contact us to request a seminar.


Our lawyers post regular and timely articles on key environmental, Aboriginal and energy law developments affecting a range of industry sectors, governments, Aboriginal communities and individuals.



Upcoming Speaking Engagement

Nov 26, 2019

Bureau Veritas Laboratories - National Science Summit

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Feature Article

Nov 29, 2019

A Changing Climate around Reporting: Canadian Securities Regulator Provides Guidance on Reporting Climate Change-Related Risks

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