The Labor department’s Voluntary Fiduciary Correction Program’s § 5 (General Rules for Acceptable Corrections) includes this:
“The fiduciary, plan sponsor[,] or other Plan Official, shall pay the costs of correction, which may not be paid from plan assets.” § 5(c)(1).
“[T]he plan may not pay any costs associated with recalculating participant account balances to take into account the new valuation. There would be no need for these additional calculations . . . if [the fiduciary had not breached its responsibility]. Therefore, the cost of recalculating the plan participants’ account balances is not a reasonable plan expense, but is part of the costs of correction.” § 5(c)(3).
“Any fees paid to such representative for services relating to the preparation and submission of the [VFC] application may not be paid from plan assets.” § 6(b).
https://www.govinfo.gov/content/pkg/FR-2006-04-19/pdf/06-3674.pdf
Even if no fiduciary uses the VFC Program, a fiduciary might, unless its lawyer advises differently, presume the Program’s conditions follow an Employee Benefits Security Administration general interpretation that a plan ought not to be burdened by an expense that would not have been incurred had a fiduciary not breached its responsibility to the plan.
Such an interpretation might be logically consistent with ERISA § 409(a): “Any person who is a fiduciary with respect to a plan who breaches any of the responsibilities, obligations, or duties imposed upon fiduciaries by this title [I] shall be personally liable to make good to such plan any losses to the plan resulting from each such breach, . . . , and shall be subject to such other equitable or remedial relief as the court may deem appropriate[.]”
The circumstances and reasoning might be different if there was no fiduciary breach.