CASSA is a federation of provincial and territorial professional affiliates and individual members:

AAESQ and ADGESBQ (Quebec)
BCSSA (British Columbia)
NLASSA (Newfoundland and Labrador) 
NWTSA (Northwest Territories)
PSAANS (NovaScotia)
MASS (Manitoba)
NBSSA (New Brunswick)
OCSOA (Ontario) 
CASS (Alberta)
LEADS (Saskatchewan)
RNDGÉ