5 CFR § 315.907 - Failure to complete the probationary period.
(a) Satisfactory completion of the prescribed probationary period is a prerequisite to continued service in the position. An employee who, for reasons of supervisory or managerial performance, does not satisfactorily complete the probationary period is entitled to be assigned, except as provided in paragraph (b) of this section, to a position in the agency of no lower grade and pay than the one the employee left to accept the supervisory or managerial position.
(b) A nonsupervisory or nonmanagerial employee who is demoted into a position in which probation under § 315.904 is required and who, for reasons of supervisory or managerial performance, does not satisfactorily complete the probationary period is entitled to be assigned to a position at the same grade and pay as the position in which he or she was serving probation. The employee is eligible for repromotion in accordance with agency promotion policy.
(c) The agency must notify the employee in writing that he or she is being assigned in accordance with this section.