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Environment • Aboriginal • Energy

Robert Woon


T: 416-642-4871  E:


Robert Woon is an associate lawyer, assisting a wide variety of clients with their environmental law and environmental litigation issues. Robert’s background in environmental engineering allows him to bridge the technical aspects of complex environmental matters with the law to provide practical solutions for his clients. Robert is called to the bar of Ontario.

Environmental Law

Robert helps clients identify, manage and resolve environmental legal risks and liabilities from the ownership, redevelopment and remediation of brownfields/contaminated sites.

Robert also assists clients with regulatory compliance with federal, provincial, and municipal environmental laws. Robert advises clients on how to comply with regulatory inspections and investigations and minimize the risk of fines, penalties, orders and prosecutions.

Environmental Litigation

  • Environmental civil litigation
  • Defence of environmental regulatory prosecutions
  • Administrative appeals and hearings

Robert assists clients with a broad spectrum of environmental litigation, from prosecuting and defending civil lawsuits with an environmental aspect to appealing approvals and orders issued by environmental regulators to tribunals and administrative bodies, including Ontario’s Environmental Review Tribunal.

Robert also defends clients who are being prosecuted for environmentally related offences under federal, provincial or municipal laws.

Prior Environmental Experience

Robert has a B.Eng. in  environmental engineering and graduated from a co-op program, completing 20 months of internships at civil engineering firms.

At Queen’s University, Robert conducted legal research for an environmental non-governmental organization while volunteering with Pro Bono Students Canada. Robert was also the Co-President of the Queen’s University Environmental Law Association and participated in the Willms & Shier Environmental Law Moot in 2013.


  • Industrial companies
  • Insurers and financial institutions
  • Land developers, property owners, landlords and tenants
  • Construction sector
  • Waste management sector
  • Engineering and consulting firms
  • Municipalities
  • Individuals

Representative Work

Environmental Law

  • Historic Contamination of Property by Dry Cleaners—Providing advice to a strip mall owner about the civil and regulatory risks and liabilities arising from owning property contaminated through a former tenant’s historic dry cleaning operations.
  • Successful Resolution of Regulatory Investigation of Industrial Manufacturer—Assisted an industrial manufacturer to respond to a municipality and the Ontario Ministry of the Environment and Climate Change about potential municipal by-law and provincial law contraventions, allowing the client to continue its operations without any charges being laid.
  • Negotiations with Former Tenants about Contamination—Assisting a land developer negotiate with a former tenant without recourse to litigation concerning contamination from the operation of a former gas station.

Environmental Litigation

  • Defence of Engineering Firm in a Civil Claim—Assisted an engineering firm defend a civil claim involving the remediation of a brownfield site.
  • Defence of Regulatory Prosecution of Environmental Consultant—Assisted an environmental consulting firm to defend provincial offence charges under the Ontario Water Resources Act involving alleged discharges during the repair of a culvert.
  • Defence of Regulatory Prosecution of Construction Firm—Assisting a construction firm to defend provincial offence charges under the Ontario Environmental Protection Act involving a gas line strike.
  • Contaminant Migration in Industrial Park—Assisting an industrial manufacturer defend a civil claim involving alleged off-site migration of chlorinated solvent contaminants to a neighbouring property.
  • Contamination of Public Right-of-Way—Assisted a regional municipality to pursue a civil claim involving the contamination of a public right-of-way by an adjacent gas station.
  • Successful Settlement for Transit Authority—Assisted a transit authority to obtain a settlement from an adjacent industrial operator for off-site migration of chlorinated solvent contaminants.




  • Canadian Bar Association—member
  • Ontario Bar Association—member




September 11, 2017

Don’t Purchase a Lemon: Top 5 Mistakes to Avoid when Closing the Deal!

Buying real estate is like buying a used car; if you are not careful, you can end up with a lemon. However, unlike buying that used car, purch...


February 02, 2015

Experts in Environmental Litigation

Environmental litigators find themselves embroiled in a world of disputes where science, engineering and environmental law intersect. These dispute...




July 27, 2015

Canadian Journal of Administrative Law & Practice: Experts in Environmental Litigation

Willms & Shier Environmental Lawyers LLP is proud to announce that Marc McAree’s and Robert Woon's article titled Experts in Environmenta...


September 08, 2014

Welcome Nicole Petersen and Robert Woon!

Willms & Shier is delighted to welcome new associates Nicole Petersen and Robert Woon. Nicole assists First Nations, business and governme...



  • Called to the Bar of Ontario (2014)
  • J.D., Queen’s University (2013)
  • B.Eng. Environmental Engineering (Co-op), University of Guelph (2010)




"The ability to grasp the very nature of our business and the extent of our situation and report regularly on the magnitude of the issue."

Steel Company Executive