5 CFR § 1639.30
Non-waiver of rights by payments
November 4, 2020
An employee's involuntary payment of all or any portion of a debt being collected under this subpart must not be construed as a waiver of any rights which the employee may have under 5 U.S.C. 5514 or any other provisions of a written contract or law, unless there are statutory or con tractual provisions to the contrary.