Kylie Sier joined Cavalluzzo LLP as an associate in 2020, after working with the firm as an articling student and summer student. Kylie is deeply committed to advocating for the dignity and rights of her clients, and assisting them in navigating complex legal issues.

Kylie primarily practices in the areas of labour law, professional regulation, constitutional, and quasi-criminal law, representing private and public sector unions as well as individual workers. She has appeared before labour arbitrators; various administrative tribunals including the Human Rights Tribunals, Ontario College of Teachers Discipline Committee, and the Health Professions Appeal and Review Board, and; the Superior Court of Justice (including Divisional Court), Ontario Court of Appeal, and the Supreme Court of Canada.

Kylie received her Juris Doctor from Osgoode Hall Law School, at York University, in 2019. During law school, she worked as a caseworker in the Immigration Division at Parkdale Community Legal Services, and was a senior editor on the Journal of Law and Social Policy. Prior to commencing her legal career, Kylie earned a Bachelor of Social Work Degree from the University of Regina and worked as a Domestic Violence Support Worker, Community Youth Worker, and gender mainstreaming policy intern.


  • Call to the Ontario Bar, 2020
  • Osgoode Hall Law School, JD, 2019
  • University of Regina, Bachelor of Social Work, 2012


  • Canadian Bar Association
  • Ontario Bar Association


  • D. Paul Emond Award, Upper Year Award of Excellence in both of her upper years, as well as prizes in civil procedure, family law, and administrative law.

Related News

News/29 November 2022

Bill 124 Declared Unconstitutional

Significant Win For The Labour Movement

News/9 April 2021

Article Written by Cavalluzzo Published on Legal Matters Canada

Published Article Focuses on How Complaints Against Ontario Teachers are Investigated

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Blog/25 August 2023

Self-Regulated Professionals may be Subject to Remediation or Discipline for Making Discriminatory or Degrading Public Statements

Advice for Self-Regulated Professionals

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A Guide for Non-Unionized Employees to the New Federal Pay Equity Act

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Cavalluzzo LLP lawyers provide a comprehensive guide to the new federal Pay Equity Act, which came into effect August 31, 2021. This guide, intended f...
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A Trade Union Guide to the New Federal Pay Equity Act

Edition #1, October 12, 2021

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Kylie's Practice Areas