Siobhan M. O’Brien

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. Moreover, she authored a chapter in the legal reference text Mitigation in Ontario Employment Law which was published by LexisNexis Canada in 2023.

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.

Outside of her practice, Siobhan enjoys spending time with family at Otter Lake and planning the next opportunity to eat a stack of pancakes at Mildred’s Temple Kitchen in Toronto.