29 C.F.R. § 1650.111 Limitation on amount of deductions.
Title 29 - Labor
The size and frequency of installment deductions will bear a reasonable relationship to the size of the debt and the employee's ability to pay. The amount deducted for any period, however, will not exceed 15 percent of the disposable pay from which the deduction is made, unless the employee has agreed in writing to the deduction of a greater amount. Installment payments of less than $25 will be accepted only in the most unusual circumstances.
Title 29: Labor
PART 1650—DEBT COLLECTION
Subpart A—Procedures for the Collection of Debts by Salary Offset
§ 1650.111 Limitation on amount of deductions.