In Ontario, those dependent on substances are no longer eligible for welfare payments based on an addiction disability. While the impact of this program has not been assessed, evidence from a similar policy shift in the USA suggests deleterious effects on the health and social functioning of about half of those who lose this form of social support. A review of the research on the chronic-illness view of addiction, the fostering of stigma by exclusionary social policies, and the negative effects on mental health and homeless status associated with the loss of welfare benefits leads to the conclusion that this is an ill-advised policy for Ontario. Its continuation there, and its extension to other provinces, is not recommended.