Unclassified employees are typically enrolled into the Alternate Benefit Program (ABP) mandatory retirement plan. Classified/Career Service employees are typically enrolled into either the Public Employees' Retirement System (PERS) or the Police and Firemen's Retirement System (PFRS) mandatory retirement pension plans. If you have an existing Teachers Pension Annuity Fund (TPAF) mandatory retirement plan, please click here for further information. Not sure if you are in a Classified/Career Service or Unclassified position? Clarification regarding positions designated as Unclassified and Classified/Career Service can be found here.