[Code of Federal Regulations] [Title 5, Volume 1] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 5CFR315.901] [Page 172] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER I--OFFICE OF PERSONNEL MANAGEMENT PART 315_CAREER AND CAREER-CONDITIONAL EMPLOYMENT--Table of Contents Subpart I_Probation on Initial Appointment to a Supervisory or Managerial Position Sec. 315.901 Statutory requirement. Source: 44 FR 44811, July 31, 1979, unless otherwise noted. 5 U.S.C. 3321 provides for ``a period of probation . . . before initial appointment as a supervisor or manager becomes final.'' It also says that a supervisor or manager ``who does not satisfactorily complete the probationary period . . . shall be returned to a position of no lower grade and pay than the position from which the individual was transferred, assigned or promoted.'' This subpart contains OPM regulations implementing those requirements of law.