29 C.F.R. § 4221.8

(a) Form. The arbitrator shall render a written award that—

(1) States the basis for the award, including such findings of fact and conclusions of law (which need not be explicitly designated as such) as are necessary to resolve the dispute;

(2) Adjusts (or provides a method for adjusting) the amount or schedule of payments to be made after the award to reflect overpayments or underpayments made before the award was rendered or requires the plan sponsor to refund overpayments in accordance with § 4219.31(d); and

(3) Provides for an allocation of costs in accordance with § 4221.10.

(b) Time of award. Except as provided in paragraphs (c), (d), and (e) of this section, the arbitrator shall render the award no later than 30 days after the proceedings close. The award is rendered when filed or served on the parties as provided in § 4221.13. The award is final when the period for seeking modification or reconsideration in accordance with § 4221.9(a) has expired or the arbitrator has rendered a revised award in accordance with § 4221.9(c).

(c) Reopened proceedings. If the proceedings are reopened in accordance with § 4221.7 after the close of the hearing, the arbitrator shall render the award no later than 30 days after the date on which the reopened proceedings are closed.

(d) Absence of hearing. If the parties have chosen to proceed without a hearing, the arbitrator shall render the award no later than 30 days after the date on which final statements and proofs are filed with him or her.

(e) Agreement for extension of time. Notwithstanding paragraphs (b), (c), and (d), the parties may agree to an extension of time for the arbitrator's award in light of the particular facts and circumstances of their dispute.

(f) Close of proceedings. For purposes of paragraphs (b) and (c) of this section, the proceedings are closed on the date on which the last brief or reply brief is due or, if no briefs are to be filed, on the date on which the hearing or rehearing closes.

(g) Publication of award. After a final award has been rendered, the plan sponsor shall make copies available upon request to the PBGC and to all companies that contribute to the plan. The plan sponsor may impose reasonable charges for copying and postage.