The Old Age Security (OAS) program is a Government of Canada pension program. You do not pay directly into it. General revenues of the Government of Canada fund it. The OAS Pension is available to most Canadians 65 years of age and older. You must apply to receive the monthly payment, and meet the residence and other status requirements.
There are additional types of Old Age Security benefits that you may be eligible to have added to your Old Age Security pension.