Iran’s pension system comprises 18 contributory pension funds, all of which provide defined benefit (DB) pensions. In terms of members, the four largest funds are respectively Social Security Organization (SSO), Civil Servants Pension Fund (CSPF), the Rural and Nomads’ Pension Fund (RNPF), and the Armed Forces Pension Fund (AFPF). 

Social Security Organization (SSO) is the only organization that aside from old age pension and health insurance, it also offers unemployment insurance (for those insured members who lose their jobs). The other funds provide their members with either old age pension or health insurance, and in some cases they offer both of them. However, the other pension funds such as Armed Forces Pension Scheme (AFPF), Banks’ Joint Pension Fund (BJPF), Tehran Municipality’s Pension Fund (TMPF), Oil Industry Pension Fund (OIPF) have arranged and drew up contracts with a variety of health care centers so that the institutions under such funds and the respective members can enjoy health care services offered by the centers.