At the end of his studies at Laval University in 1967, Marcel R. Tremblay began his career as an advisor with Price Waterhouse in Montreal and then in Quebec City.
After two mandates in the House of Commons in Ottawa, he turned over to the private sector and became owner of a firm specialized in Mergings and Acquisitions of companies in Montreal.
In order to be closer of his family, he returned to Quebec City and founded his own center of development of businesses, mergers and acquisitions of companies, strategic alliances and private financing, under the corporate name Le Groupe Marcel R. Tremblay Inc.
Through the years, Marcel R. Tremblay acted as an advisor to a number of governments in South America, in Europe and in Africa.
Marcel R. Tremblay was also member of several parliamentary committees on the international scene: Canada-Europe, Canada-Japan, Canada-United States and Canada-China.
He was president of the Commission of the credit at the Caisse populaire de Charlesbourg and sat on the Executive Committee ant on the Board of directors of the Security and Defence Technopole.
He is the father of two children: Lissia C.Tremblay is a lawyer and David R. Tremblay is a Bachelor in Consumption Sciences at Laval University.