29 U.S. Code § 1424 - Overburden credit against minimum contribution requirement
(a) Applicability of overburden credit to determinations
For purposes of determining the minimum contribution requirement under section 1423 of this title (before the application of section 1423 (b)(2) or (d) of this title) the plan sponsor of a plan which is overburdened for the plan year shall apply an overburden credit against the plan’s minimum contribution requirement for the plan year (determined without regard to section 1423 (b)(2) or (d) of this title and without regard to this section).
(b) Determination of overburden status of plan
A plan is overburdened for a plan year if—
(1) the average number of pay status participants under the plan in the base plan year exceeds the average of the number of active participants in the base plan year and the 2 plan years preceding the base plan year, and
(c) Amount of overburden credit
The amount of the overburden credit for a plan year is the product of—
The amount of the overburden credit for a plan year shall not exceed the amount of the minimum contribution requirement for such year (determined without regard to this section).
(d) Amount of overburden factor
For purposes of this section, the overburden factor of a plan for the plan year is an amount equal to—
(e) Definitions; determinative factors
For purposes of this section—
(1) The term “pay status participant” means, with respect to a plan, a participant receiving retirement benefits under the plan.
(2) The number of active participants for a plan year shall be the sum of—
(A) the number of active employees who are participants in the plan and on whose behalf contributions are required to be made during the plan year;
(B) the number of active employees who are not participants in the plan but who are in an employment unit covered by a collective bargaining agreement which requires the employees’ employer to contribute to the plan, unless service in such employment unit was never covered under the plan or a predecessor thereof, and
(C) the total number of active employees attributed to employers who made payments to the plan for the plan year of withdrawal liability pursuant to part 1 of this subtitle, determined by dividing—
(ii) the amount equal to the total contributions received by the plan during the plan year divided by the average number of active employees who were participants in the plan during the plan year.
The Secretary of the Treasury shall by regulation provide alternative methods of determining active participants where (by reason of irregular employment, contributions on a unit basis, or otherwise) this paragraph does not yield a representative basis for determining the credit.
(3) The term “average number” means, with respect to pay status participants for a plan year, a number equal to one-half the sum of—
(4) The average guaranteed benefit paid is 12 times the average monthly pension payment guaranteed under section 1322a (c)(1) of this title determined under the provisions of the plan in effect at the beginning of the first plan year in which the plan is in reorganization and without regard to section 1322a (c)(2)  of this title.
(5) The first year in which the plan is in reorganization is the first of a period of 1 or more consecutive plan years in which the plan has been in reorganization not taking into account any plan years the plan was in reorganization prior to any period of 3 or more consecutive plan years in which the plan was not in reorganization.
(f) Eligibility of plan for overburden credit for plan year
(1) Notwithstanding any other provision of this section, a plan is not eligible for an overburden credit for a plan year if the Secretary of the Treasury finds that the plan’s current contribution base for the plan year was reduced, without a corresponding reduction in the plan’s unfunded vested benefits attributable to pay status participants, as a result of a change in an agreement providing for employer contributions under the plan.
(2) For purposes of paragraph (1), a complete or partial withdrawal of an employer (within the meaning of part 1 of this subtitle) does not impair a plan’s eligibility for an overburden credit, unless the Secretary of the Treasury finds that a contribution base reduction described in paragraph (1) resulted from a transfer of liabilities to another plan in connection with the withdrawal.
(g) Overburden credit where 2 or more multiemployer plans merge
Notwithstanding any other provision of this section, if 2 or more multiemployer plans merge, the amount of the overburden credit which may be applied under this section with respect to the plan resulting from the merger for any of the 3 plan years ending after the effective date of the merger shall not exceed the sum of the used overburden credit for each of the merging plans for its last plan year ending before the effective date of the merger. For purposes of the preceding sentence, the used overburden credit is that portion of the credit which does not exceed the excess of the minimum contribution requirement (determined without regard to any overburden requirement under this section) over the employer contributions required under the plan.
 See References in Text note below.
Source(Pub. L. 93–406, title IV, § 4244, as added Pub. L. 96–364, title I, § 104(2),Sept. 26, 1980, 94 Stat. 1255.)
References in Text