Old Age, Survivors and Disability Insurance Program (OASDI) The official name for Social Security in the United States. Investopedia Says: OASDI is a comprehensive federal benefits program developed in 1935. The program includes retirement benefits, disability income, veteran's pension, public housing, and even the food stamp program. The Social Security tax is used to pay for the program. Related Terms: Canadian Pension Plan - CPP Pension Plan Social Security Social Security Administration - SSA Substantial Gainful Activity - SGA |