Sarah Chaster

Sarah Chaster

Associate, Litigation

Contact Information

tel: 778.785.2737



Bar Admission

  • British Columbia, 2018
  • Ontario, 2018


University of Victoria, JD

University of British Columbia, BA


English, French

Sarah is an associate in Osler’s Litigation Group in Vancouver, where she maintains a general civil and commercial litigation practice. Sarah advises individual, corporate, and institutional clients on a wide range of issues. Her experience includes public and administrative law matters, as well as criminal and regulatory proceedings. Sarah has appeared in and made submissions at all levels of court in British Columbia.

Prior to joining the firm, Sarah clerked for Chief Justice Richard Wagner at the Supreme Court of Canada. She then practiced at a leading litigation firm in Vancouver before joining Osler.

Sarah graduated from the University of Victoria’s Faculty of Law in 2017. During her education she served as a research assistant to several of her professors and as a tutor to her peers. She completed the Criminal Law Term and the Law Centre, a full-time clinical program in which she provided advice, assistance, and representation to clients who could not afford a lawyer. Throughout her legal studies Sarah was recognized with numerous awards for student leadership, academic excellence, and commitment to community service.

    • A.B. v. C.D. et al, 2020 BCCA 11: acted for an individual identified as AB in a significant family appeal relating to the right of AB, a transgender teenager, to consent to gender affirming medical treatment over the objections of his father
    • Taseko Mines Limited v. British Columbia (Minister of Environment and Climate Change Strategy), 2019 BCSC 1541: acted for the petitioner Taseko Mines seeking judicial review of the Minister’s decision to refuse to consider extending the time allotted to start work under Taseko’s environmental assessment certificate
    • Venables v. Venables, 2019 BCCA 281: acted for a spouse in a case involving the legal test for the unequal division of family property under provincial legislation

  • Heather Raven Leadership Award for demonstrating leadership, academic excellence and a commitment to community service (University of Victoria, Faculty of Law)
  • J. Lyle Wilson Prize for highest standing in the Administrative Law course (University of Victoria, Faculty of Law)
  • Chris Considine Prize for highest standing in the Evidence course (University of Victoria, Faculty of Law)
  • David Roberts Prize in Legal Writing for a paper which best exemplifies the presentation of a legal subject in a literate and persuasive manner (University of Victoria, Faculty of Law)
  • Maclean Scholarship in Legal History and Criminal Law for demonstrating high academic achievement in research and writing on criminal law and procedure (University of Victoria, Faculty of Law)
  • McCarthy Tetrault Scholarship in Memory of John Finlay for outstanding performance in a legal skills, ethics or advocacy course (University of Victoria, Faculty of Law)
  • Harper Grey Scholarship for achieving high standing in law (University of Victoria, Faculty of Law)
  • John and Dora Wight Scholarship in Law for demonstrating all round proficiency in legal studies in first year (University of Victoria, Faculty of Law)
  • Continuing Legal Education Society of B.C. Award in Criminal Law  for academic excellence in the first year Criminal Law Course (University of Victoria, Faculty of Law)
  • President’s Scholarship for academically outstanding students (University of Victoria, Faculty of Law – 2015, 2016)
  • British Columbia Superior Court Judges Scholarship for general academic proficiency (University of Victoria, Faculty of Law)

  • Access Pro Bono Roster Program – Volunteer Lawyer
  • Legal Information Centre – Student Volunteer
  • Pro Bono Students Canada – Student Volunteer

  • Law Society of British Columbia
  • Law Society of Ontario
  • Canadian Bar Association
  • Advocates’ Society
  • Vancouver Bar Association

  • “Public Procurement and the Charbonneau Commission: Challenges in Preventing and Controlling Corruption”, Appeal: Review of Current Law and Law Reform, Volume 23, 2018
  • “Cruel, Unusual and Constitutionally Infirm: Mandatory Minimum Sentences in Canada”, Appeal: Review of Current Law and Law Reform, Volume 23, 2018