Two provisions reduce Social Security benefits for retirees if they worked both private- and public-sector employment.curtoicurto/Getty, 4x6/Getty, suravikin/Getty, DNY59/Getty, Tyler Le/BISome American workers are encountering an unpleasant surprise when they reach retirement.Murky provisions slash Social Security for people who work in both the government and private sector throughout their careers.Critics argue the provisions unfairly cut retirement funds, while supporters say they ensure equity.Patrice Earnest, 66, expected to have much more money for retirement.