[Code of Federal Regulations] [Title 48, Volume 7] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 48CFR2901.603-4] [Page 10] TITLE 48--FEDERAL ACQUISITION REGULATIONS SYSTEM CHAPTER 29--DEPARTMENT OF LABOR Sec. 2901.603-4 Terminations. Termination of a contracting officer's appointment will be made in writing unless the warrant contains the basis for the termination (i.e., retirement, reassignment). Terminations may be immediate, but must not operate retroactively.