Public Servant Retirement Protection Act of 2011 - Amends title II (Old Age, Survivors and Disability Insurance) of the Social Security Act (SSA) to repeal the current windfall elimination provision (WEP) (that reduces the Social Security benefits of workers who also have pension benefits from employment not covered by Social Security) for individuals first performing non-covered service beginning one year after enactment of this Act.
Establishes a new formula for the treatment of non-covered earnings in determining Social Security benefits. Applies such formula to individuals subject to the current WEP if the benefit under the new formula would be higher.