Siobhan M. O’Brien

Siobhan M. O’Brien

She/Her

Hicks Morley Hamilton Stewart Storie LLP

Recognized since 2023

Ottawa, Ontario

Practice Areas

Labour and Employment Law

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Siobhan O’Brien is a partner in Hicks Morley’s Ottawa office and is the firm’s Eastern Regional Lead Partner. Siobhan practises employment, labour and human rights law. She provides strategic, practical and cost-effective advice to employers from coast to coast on a variety of workplace issues. In addition to appearing before courts, human rights tribunals, arbitrators and labour boards, Siobhan routinely provides advice on wrongful dismissal litigation, human rights law, grievance arbitration, labour relations, collective bargaining and strike management.

Siobhan’s work has included advice and assistance to employers regarding notice terminations and dismissals for cause, policy development, restructuring, employment standards, accommodation, attendance management, collective agreement interpretation, discipline and dismissal, management rights, pregnancy/parental leave and restrictive covenants.

In addition to being exceptionally responsive and accessible, she is dedicated to understanding her clients’ particular business needs and is committed to recommending the best possible course of action.

As the firm’s Eastern Regional Lead Partner, Siobhan supports the ongoing growth, development, business planning and administration of our Ottawa and Kingston offices.

Contact & Links
Location
  • 150 rue Metcalfe Street, Suite 2000
    Ottawa, ON K2P 1P1
    Canada
Demographics
  • Pronouns: She/Her
Education
  • Carleton University, B.A.
  • Queen’s University, J.D.
Bar Admissions
  • Ontario, 2009
Affiliations
  • Canadian Bar Association - Member
  • County of Carleton Law Association - Civil Litigation Conference Planning Committee Member
  • Ontario Bar Association - (Education Law, Women Lawyers Forum, Labour & Employment Law)
  • Women’s Business Network of Ottawa - Member

Recognized in The Best Lawyers in Canada 2025 for work in:
  • Labour and Employment Law
Awards:
  • Canadian Legal Lexpert® Directory

    Employment Law (Consistently Recommended); Labour Relations (Repeatedly Recommended)

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Publications

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