Working for Public Works and Government Services Canada (PWGSC) from 1981 to 1998 as a property manager and project technologist, Réjean Touchette carried out more than 1,800 construction projects dealing with the various technical aspects of buildings (architecture, engineering civil engineering, mechanics and electricity).

Concurrently, in August 1992, he co-founded, with partners, a company to draft the plans of numerous construction projects. In 2006, the company became  Cossette et Touchette and the group specializes in drafting asset management plans, property status and contingency funds reports.