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  • 2016 Lexpert Ranked 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 is rated “Most Frequently Recommended”, Donna Shier and Charles Birchall are rated “Consistently Recommended”, and Julie Abouchar is rated “Repeatedly Recommended” for Environmental Law. Julie Abouchar is rated “Most Frequently Recommended” and John Donihee is rated “Repeatedly Recommended” for Aboriginal Law.

  • BestLawyers-2017

    The Best Lawyers in Canada© names Willms & Shier Environmental Lawyers LLP, “Law Firm of the Year” for Environmental Law in the 2017 Edition. Donna Shier, Marc McAree, Julie Abouchar and Charles Birchall have been selected by their peers to be included in the 2017 edition of The Best Lawyers in Canada©

  • 2016 Lexpert ALM 500Marc McAree is rated Most Frequently Recommended in the 2016 Lexpert®/American Lawyer Guide To The Leading 500 Lawyers in Canada.

  • Best Lawyers Logo2016 Best Lawyers in Canada

    John Willms, Donna Shier, Marc McAree, Julie Abouchar and Charles Birchall have been selected by their peers to be included in the 2016 edition of The Best Lawyers in Canada© in the field of Environmental Law. Julie Abouchar is also recognized in the areas of Energy Regulatory Law and Aboriginal Law.

  • 2014 Best Lawyers Lawyer of the Year

    Donna Shier named Best Lawyers© Lawyer of the Year 2014, Environmental Law, Toronto.

  • 2013 Best Lawyers Lawyer of the Year

    Charles Birchall named Best Lawyers© Lawyer of the Year 2013, Environmental Law, Toronto.

Willms & Shier Environmental Lawyers LLP represents clients on a full range of environment, Aboriginal and energy law issues.  Our dedicated legal team includes six Environmental Law Specialists certified by the Law Society of Upper Canada 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

"Intelligent, detail oriented and organized people, a pleasure to work with."

Shopping Centre, Property Manager/Owner

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.

Blog (Coming soon! )

Watch for Willms & Shier’s new blog to provide you with more timely updates and analysis on key environmental, Aboriginal and energy topics! 


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.


Our bi-monthly e-newsletter provides a convenient collection recent leading articles and news.



Featured Event

November 22, 2016

Hamilton-Halton Construction Association: Managing Excess Soils

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Featured Publication

December 01, 2016

Aboriginal Consultation and Administrative Proceedings: Two Cases Heard by the SCC in November

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