In Ottawa, MSW designates a level of education, whereas RSW designates registration with a regulating body.
MSW stands for a Master’s of Social Work, a graduate-level degree earned after completing a Bachelor’s. A professional holding an MSW may not necessarily practice clinical therapy, but many do.
On the other hand, RSW stands for Registered Social Worker. An RSW in Ottawa is registered with the Ontario College of Social Workers and Social Service Workers (OCSWSSW). They have met the OCSWSSW’s education and training requirements, follow its code of ethics and professional standards, and participate in continuing education. They are accountable to the OCSWSSW as a regulating body.
Your health insurance plan may specify that you are covered for treatment by an MSW, but typically, this professional must also be registered as an RSW.
For more on MSW vs. RSW, see What does MSW RSW mean in Canada?