(b)
An employee entitled to the benefits of subsection (a) of this section is entitled to be reemployed within 30 days of his application for reemployment in his former position or a position of like seniority, status, and pay in the agency from which he transferred, if—
(1)
he is separated from the international organization within 5 years, or any extension thereof, after entering on duty with the international organization or within such shorter period as may be named by the head of the agency at the time of consent to transfer; and
(2)
he applies for reemployment not later than 90 days after the separation.
On reemployment, an employee entitled to the benefits of subsection (a) is entitled to the rate of basic pay to which the employee would have been entitled had the employee remained in the civil service. On reemployment, the agency shall restore the sick leave account of the employee, by credit or charge, to its status at the time of transfer. The period of separation caused by the employment of the employee with the international organization and the period necessary to effect reemployment are deemed creditable service for all appropriate civil service employment purposes. This subsection does not apply to a congressional employee.