Hart has actively served as a Director and Governor of a range of not-for-profit organizations for more than 30 years. Her long-standing interest in best governance practices led her to enroll and graduate from (March, 2005) the University of Toronto Rotman School of Management's Director's Education Program, becoming an accredited Corporate Director in June, 2005. She is currently a member of the boards of the Centre for Addiction and Mental Health (CAMH) and the General Insurance OmbudService. Previous Board experience includes the Greater Toronto Airports Authority (GTAA), Sheridan College, Roots of Empathy, Goodwill Toronto, Kingsway College School, Canadian Stage Company, Canadian Psychiatric Research Foundation, CNIB Library, Leaside Arthritis Society, and the Ontario Bar Association.