5 U.S.C. § 5705 - U.S. Code - Unannotated Title 5. Government Organization and Employees § 5705. Advancements and deductions

An agency may advance, through the proper disbursing official, to an employee entitled to per diem or mileage allowances under this subchapter, a sum considered advisable with regard to the character and probable duration of the travel to be performed. A sum advanced and not used for allowable travel expenses is recoverable from the employee or his estate by--