Employed as a fitter at CAE Inc., on February 23, 1989, Sophie became a member of Local 522 of the Communications and Electrical Workers Union of Canada (CWC), which in 1992 became the Communications, Energy and Paperworkers Union of Canada (CEP).
A few months after she was hired, the company’s workers went on strike, marking the beginning of Sophie’s involvement in the union. Within less than two years, she took on the role of shop steward, representing all the workers on the evening shift, and then recording secretary for her local. She subsequently held various other positions, including health and safety representative, EAP representative and delegate to the QFL’s Metropolitan Montreal Regional Council. In 1999, she became the first woman to be elected chief steward in her workplace.
Thanks to her commitment as a union member and the various positions she has held throughout her union career, Sophie has had the opportunity to work on a number of different files and committees, including the status of women, francization, the committee for people with disabilities, etc. She also became a trainer in the early 1990s.
She served as the rank and file member representing the communications sector in the Quebec region during the last mandate of the CEP’s National Executive Board prior to the creation of Unifor.
Since October 2012, she has served as president of her local, secretary of the Board of Directors of the Comité sectoriel de main-d'œuvre en aérospatiale du Québec and member of the Board of Directors of the Caisse Desjardins des travailleuses et travailleurs unis.
At the founding meeting of the Unifor Quebec Council, she became the first vice-chair of the Executive Board, and in November 2022, she was the first woman to be elected chair of the Unifor Quebec Council.