At the CSN, unions organize on a sectoral or professional basis, in federations. There are eight federations, each of which has the responsibility to make available to its union affiliates all the services required for negotiations and the application of collective agreements.
Union life in the regions is organized around thirteen Regional Councils across Québec, which bring together, by region, the various CSN affiliate unions.
The Regional Council is vital for fostering solidarity among the unions in a region, particularly during conflicts. It is called upon to intervene on regional issues and on themes developed by the CSN in the course of its campaigns.