Federal Regulations that May Reduce Social Security Benefits
Windfall Elimination Provision
If you work for an employer who does not withhold Social Security taxes from your salary, such as a government agency or an employer in another country, the pension you get based on that work may reduce your Social Security benefits.
about the Windfall Elimination Provision.
Government Pension Offset
If you receive a pension from a federal, state or local government based on work where you did not pay Social Security taxes, the Social Security benefit of your spouse, widow, or widower may be reduced.