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Cassandra started her legal career with the federal Department of Justice where she learned many lessons about how government works.  She has acted as counsel on cases as varied and as complicated as a section 15 Charter challenge, a chapter 11 NAFTA dispute and a commercial breach of contract case that alleged breaches of confidence, fiduciary duty and conspiracy.  She has extensive experience in municipal and environmental law and has handled wildlife cases, given advice on Canadian navy ship discharges and toxic emissions.  She wrote a policy paper for the City of Mississauga on municipal powers and constitutional reform which was used to develop a policy on constitutional fairness for Ontario cities.

Cassandra decided to try her hand with entrepreneurship in 2004 when she partnered with Paul to create Marshall Kirewskie. Cassandra practices civil litigation with an emphasis on employment (constructive and wrongful dismissal), estates, environmental and constitutional law.  Cassandra has advised and represented employees and employers and business owners in a wide variety of industries.  Her advice is sound, practical and trusted.  She has expertise in workplace harassment. She has given behind the scenes advice to clients who are experiencing workplace harassment but who wish to maintain their employment and acted for clients who have decided to bring harassment complaints or to leave a poisoned workplace and to sue for constructive dismissal.  She strives to forge personal relationships with her clients and to provide them with first-rate service and communication. She has lived in the Oakville Burlington area for over three decades.

Cassandra is an experienced legal researcher who believes that preparation is the key to success in the courts.  She is writing a book on the methods of constitutional interpretation which considers the intersection of Canadian constitutional law with comparative and international law.  One of her publications was quoted by the Supreme Court of Canada.  She has published in the Supreme Court Law Review and the National Journal of Constitutional Law.  Cassandra is an able lawyer and litigator who delights in untangling complex legal problems and in driving the law in new directions.  She works with Paul to assure that his clients are armed with the most up to date understanding of the law.


M.A., LL.B., Ph.D. (c)

Cassandra and Paul recently won an environmental case before the Normal Farm Practices and Protection Board, a specialized expert Ontario administrative tribunal set up to regulate legal disputes between farmers and their neighbours.  Their clients, who are a group of 17 residents, challenged a court-appointed receiver’s operation of an anaerobic digester on their neighbour’s farm property in Niagara on the Lake.  The local group of residents were disturbed by the on-going nuisances the waste disposal site generated and challenged the Town of Niagara on the Lake and the Ministry of Environment’s decision to site the anaerobic digester on the property.  The Board found that waste disposal is not an agricultural activity and ordered the operator to decommission the waste disposal site.


  • BA (Hons.) Political Theory and Philosophy, University of Toronto 1987

  • LLB, summa cum laude, University of Ottawa, Faculty of Law 1993

  • MA, International law and politics (MA thesis: On humanitarian intervention, the late L.C. Green supervisor), University of Alberta 2004

  • Called to the Ontario bar, 1995

  • Ph.D. (c) Osgoode Hall Law School

  • MA candidate, McMaster University, Philosophy Department

905-634-2002 EXT. 2

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