The Social Security Administration is sending out retroactive payments right now, thanks to the Social Security Fairness Act.

The Social Security Fairness Act was signed into law by then-President Joe Biden on Jan. 5. This act repeals two provisions–the Windfall Elimination Provision and Government Pension Offset–that have reduced Social Security benefits for millions of Americans for decades.

The Social Security Fairness Act gets rid of two long-standing laws: the Windfall Elimination Provision (WEP) and the Government Pension Offset (GPO).