29 C.F.R. § 100.616 – Payment collection.

(a) The NLRB shall make every effort to collect a claim in full before it becomes delinquent, but will consider arranging for payment in regular installments consistent with 31 CFR 901.8, if the debtor furnishes satisfactory evidence that he is unable to pay the debt in one lump sum. Except for a claim described in 5 U.S.C. 5514, all installment payment arrangements must be in writing and require the payment of interest, penalties, and other administrative costs. If possible, the installment payments should be sufficient in size and frequency to liquidate the debt in three years or less.
(b) If a debt is paid in one lump sum after it becomes delinquent, the NLRB shall impose charges for interest, penalties, and administrative costs as specified in 31 CFR 901.9.
(c) Payment of a debt is made by check, electronic funds transfer, draft, or money order payable to the National Labor Relations Board. Payment should be made to the National Labor Relations Board, Finance Branch, 1099 14th Street NW., Washington, DC 20570, unless payment is—
1. (1) Made pursuant to arrangements with the Department of Justice;
2. (2) Ordered by a Court of the United States; or
3. (3) Otherwise directed in any other part of this chapter.