A debt will be collected in a lump-sum or in installments. Collection will be by lump-sum collection unless the employee is financially unable to pay in one lump-sum, or if the amount of the debt exceeds 15 percent of the disposable pay for an ordinary pay period. In these cases, deduction will be by installments as set forth in § 400.138.
Code of Federal Regulations
[53 FR 5, Jan. 4, 1988]