Anne Sophie Marsolais is a doctor in family medicine with a practice in addiction and occupational medicine. She graduated from McGill Medical School and completed her residency in Family Medicine at the University of Montréal. She is certified with additional competence in addiction medicine by the College of Family Physicians of Canada and is a member of the Canadian Society of Addiction Medicine.

Her medical practice started at the emergency in remote areas of Québec where she practiced for four years. She then moved back to the metropolitan area of Montréal where she pursued her medical practice at the intensive care and at the hospitalization units for thirteen years. She explored occupational medicine and adopted the practice since 2003. Her interest in addiction medicine started in the workplace of her clients where she noticed certain employees with recurrent psychiatric problems with nebulous causes. Since then, she developed a collaborative approach with the Union, the Human Resources and the Managers to understand the causes and the impacts of observed functional problems of employees at work. She evaluates the medical conditions and the aptitude of employees for a safe and secure return to the workplace. She establishes the modalities of the return to professional activities with the collaboration of the treating professionals, the employer and the Union.

She teaches to medical students and residents in occupational medicine of the University of Montréal in regards of evaluating aptitude of workers and determining the modalities for a safe and secure return to the workplace. She is also a speaker at various national and international conferences in rehabilitation and in addiction medicine.