41 C.F.R. § 302-3.208

If an employee fails to complete their period of service under the new service agreement for reasons that are not acceptable to the agency, the employee must pay the Government:

(a) All transportation and subsistence expenses that were received during the service agreement period for tour renewal travel of the employee and their immediate family;

(b) Transportation expenses for family members who traveled directly from the former post of duty to the current post of duty; and

(c) All transportation expenses for shipment of household goods from the former post to the current post of duty.