The Construction, Maintenance and Allied Workers Canada (CMAW) is a construction trade union headquartered in Vancouver. CMAW negotiates pay and work conditions on behalf of its 4,000 members in British Columbia and Alberta. Union members include carpenters, shipbuilders, scaffolders, pipefitters, millwrights, lathers, cabinetmakers, display technicians, industrial workers and school board employees. The union, which has nine local units in BC and two in Alberta, holds about 100 certifications, mostly in BC. It is affiliated with the independent Confederation of Canadian Unions.