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Aaron Rousseau


Aaron Rousseau is a founding partner of Rousseau Mazzuca LLP. Aaron focuses on employment law and workplace advocacy.

In the early years of his career, Aaron worked at a large Bay Street law firm. He later worked for several years at a leading specialized employment law firm.

When advocacy is needed, Aaron is relentless. He has appeared at every level of court in Ontario, from the Small Claims Court up to the Ontario Court of Appeal. He also appears before the Canadian Human Rights Commission, the Ontario Human Rights Tribunal, the Ontario Labour Relations Board, the Ontario Ministry of Labour, and Employment and Social Development Canada.

Precisely because Aaron’s opponents know that he is willing and able to go to court and win, he often achieves quicker negotiated resolutions for his clients.

Never one to back away from an argument, Aaron won both the National and the North American debating championships when he was in university.

Outside of work, Aaron enjoys traveling (including to the Canadian Arctic), mountain-climbing, and practising the martial art of Brazilian jiu-jitsu.


I work with a lot of law firms in the core. I’ve seen Rousseau Mazzuca grow from a few competent and friendly people to the diverse firm that they are now. Every addition to their team has added uniquely talented people that are both professional and friendly. Rousseau Mazzuca persistently challenges themselves to be better and it shows.

Brian Chambers

Very easy to speak with, very supportive and professional in handling my concerns. Definitely would recommend to my friends and family.


I was originally referred to Aaron Rousseau of Rousseau Mazzuca back in 2016 by a trusted friend of mine that is a lawyer in another specialty. I have been a client ever since. Throughout the years, in addition to referring friends myself, I have also been pleasantly surprised that in social gatherings, unprompted, others in other social circles have also been singing his praises as “the best”. I can completely understand why. Aaron is an exceptional lawyer who is incredibly talented in his field. His advice has always guided me in the right direction and protected me. Additionally, because legal matters can be quite emotionally draining, he has shown expertise in navigating matters requiring emotional intelligence as well. I have always felt he was well worth his hourly fees and more, and he bills with integrity.



65 Queen St W, Suite 600
M5H 2M5, Toronto, Ontario
(416) 304-9899
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