Pensions generally do not reduce the amount of your Social Security but a pension based on earnings not covered by Social Security can do so.
The previously mentioned Windfall Elimination Provision (WEP) could affect the amount of your own Social Security retirement if you work for a federal, state or local government agency, a nonprofit organization or in another country and do not pay into Social Security.
What if you do not have enough Social Security covered employment to receive your own retirement benefit but you are eligible for Social Security benefits as a spouse or widow / widower? Then, if you will receive a pension from work not covered by Social Security, the Government Pension (GPO) will likely interest you.
Unlike the WEP, which involves a changed method of computing benefits, the Government Pension Offset (GPO) is a direct reduction of the SSA benefit amount as described on the SSA website, in part shown below. Some GPO exemptions apply. More about these exemptions are on the website.
From the website:
“If you receive a pension from a government job in which you did not pay Social Security taxes, some or all of your Social Security spouse’s, widow’s or widower’s benefit may be offset due to receipt of that pension. This offset is referred to as the Government Pension Offset, or GPO.
The GPO will reduce the amount of your Social Security spouse’s, widow’s or widower’s benefits by two-thirds of the amount of your government pension. For example, if you receive a monthly civil service pension of $600, two-thirds of that, or $400, must be used to offset your Social Security spouse’s, widow’s or widower’s benefits. If you are eligible for a $500 spouse’s benefit, you will receive $100 per month from Social Security ($500 – $400 = $100).”
Go here for more about the Government Pension Offset (GPO).
Just like the Windfall Elimination Provision, the Government Pension Offset is not new. Both date back to the Social Security Amendments of 1983, signed into law by President Reagan on April 20, 1983. Designed to resolve short-term funding problems faced at the time, that legislation made significant changes to the Social Security and Medicare programs.