Hazel McCallion's commitment and dedication to the people of Mississauga have made her one of Canada's best known and longest serving mayors. She has taken on leadership roles within many municipal government organizations, such as the Greater Toronto Area Mayors' Committee. Resolute in her commitment to improving the quality of life of her fellow citizens, she has also served as chair of the World Health Organization symposia on healthy cities. In addition, her annual charity golf tournament has helped to raise funds for a myriad of local, provincial and national organizations.