Susannah Margison

Businesswoman with dark hair in a black blazer and white blouse standing by a glass wall in an office setting.
Request a Mediation

Contact Information:

Email: Susannah@Hendlermediation.com

Phone: (416) 990-9581

Susannah Margison is a lawyer and mediator known for her disciplined process leadership in complex, emotionally charged disputes.

She brings more than a decade of trial experience and nearly fifteen years of professional work in conflict resolution, advising parties where legal exposure, reputation, and human dynamics intersect. Her mediation style is pragmatic, structured, and forward-focused, with particular attention to decision-making under pressure.

Susannah’s practice concentrates on professional negligence matters, including medical, hospital, and nursing malpractice; elder care and nursing home negligence; healthcare-related class actions; and institutional sexual abuse claims. She is frequently engaged in files marked by entrenched positions, heightened emotion, or trust breakdowns, and is valued for her ability to reframe risk, clarify options, and maintain momentum without inflaming conflict.

Before joining Hendler Mediation, Susannah acted as legal counsel to national organizations, advised professionals navigating reputationally sensitive disputes, and chaired one of Ontario’s largest interdisciplinary primary care boards. Her background allows her to understand both litigation realities and the institutional pressures that shape settlement decision-making.