The Ministry of Community and Social Services data set for the Ontario Drug Benefit (ODB) contains financial information on individuals on social assistance and other ODB...
The Ministry of Community and Social Services data set for Ontario Works employment assistance contains information (participation status, type of activity) on individuals...
The Ministry of Community and Social Services data set for Employment Insurance (EI) contains information on EI claimants who apply for regular, sickness, maternity, parental,...
You can also access this registry using the API (see API Docs).