This is аn action for declaratory judgment pursuant to 28 U.S.C. § 2201 by Transpersonnel, Inc., an employer of truck drivers, against Roadway Express, Inc., a motor carrier that leased drivers from Transpersonnel. The two-count complaint sought judicial declarations that: (1) Roadway was an “employer” of the leased drivers fоr purposes of potential withdrawal liability under a multiemployer pension plan governed by the Employee Retirement Income Security Act (“ERISA”), pursuant to the Multiemployer Pension Plan Amendments Act of 1980 (“MPPAA”), 29 U.S.C. §§ 1381, et seq.; and (2) Roadway was required to indemnify Transpersonnel for potential future liability Transpersonnel may inсur pursuant to the MPPAA. The district court granted summary judgment in favor of Transper-sonnel with respect to the first question and declined to decide the second because it was either premature or moot. We reverse.
I. Background
Transpersonnel employs truck drivers and Roadway is a motor carrier. In 1986 the parties enterеd into a written agreement under which Roadway would lease drivers employed by Transpersonnel for use in Roadway’s trucking operation. At the time the lease was executed, Transper-sonnel, in its capacity as the employer of the leased drivers, was party to a collective bargaining agreеment (“CBA”) with the Teamsters Local Union No. 705. Under the terms of the CBA, Transpersonnel was obligated to make contributions to the Union’s pension fund on behalf of the employees. Roadway was not a party to the CBA and had no contractual relationship with Teamsters Local 705. The lease agreement betweеn Transpersonnel and Roadway addressed the obligation to contribute to the pension fund as follows:
[Transpersonnel] will have sole control and responsibility for and will be sole signatory under and connected with all labor negotiations, grievances, collective bargaining agreements and related itеms concerning drivers furnished to [Roadway] under this Agreement.
[Transpersonnel] will pay the drivers’ wages and provide any of the benefits required by any applicable bargaining agreement between [Transpersonnel] and any authorized representative of any collective bargaining unit which may be in effect ....
[Roadway] agrees to reimburse [Tran-spersonnel], at cost, for all applicable employee benefits, including ... pension fund contributions, and other similar items paid to or on behalf of [Transper-sonnel’s] employees as a result of a union agreement obligation ....
In 1992 Roadway terminated the lease agreement, and the parties apparently went their separate ways. At some point after the lease agreement was terminated, Transpersonnel ceased making contribu *459 tions to the pension fund, although the record does not disclose the reason for the discontinuation or precisely when рayments stopped. Ten years after the lease agreement was terminated, the pension fund issued a demand on Transpersonnel for partial withdrawal liability in the amount of $441,846.96, pursuant to the MPPAA, 29 U.S.C. §§ 1381, 1382. Withdrawal liability is the amount owed a pension plan by an employer which reduces or ceases its plan contributiоns prior to fully funding the liabilities of the plan attributable to the employer. 29 U.S.C. §§ 1383, 1385. The pension fund has made no claim against Roadway and has never suggested that Roadway bears any withdrawal liability under the MPPAA. Transper-sonnel has denied liability to the pension fund and requested arbitration of the pension fund’s demand pursuant to 29 U.S.C. § 1401(a)(1). Arbitrаtion has not yet taken place, and the issues of whether Tran-spersonnel has incurred withdrawal liability and, if so, the amount of that liability, have yet to be determined.
Pending arbitration, Transpersonnel filed a two-count complaint seeking declaratory judgments that Roadway was an “employer” of the personnel at issue for purposes of potential withdrawal liability under the MPPAA and that Roadway was contractually obligated to reimburse Transpersonnel for any withdrawal liability that may possibly be assessed by an arbitrator at a later date. 1
The parties filed cross-motions for summary judgment, and the district court granted Transpersоnnel’s motion with respect to its claim in Count I that Roadway was an employer of the leased drivers for purposes of the MPPAA. The district court held that Transpersonnel and Roadway were “joint employers” for purposes of withdrawal liability under the MPPAA by virtue of Roadway’s obligation under the lease agreement tо reimburse Tran-spersonnel for contributions required of Transpersonnel under its CBAs with the Teamsters.
With respect to Count II of the complaint, the district court held that the claim was premature and would not ripen until an arbitrator had determined whether a withdrawal for purposes of the MPPAA had occurred and the amount, if аny, of Transpersonnel’s withdrawal liability. The court also held that even if the issue were ripe for adjudication, it need not address the merits because its conclusion that Roadway was an MPPAA “employer” had provided Transpersonnel all the relief it was seeking — namely, a declaration effectively comрelling Roadway to participate in the arbitration. Accordingly, the district court held in the alternative that Count II was moot. 2
*460 II. Discussion
We review the district court’s award of summary judgment de novo.
Hildebrandt v. Ill. Dep’t of Natural Res.,
The MPPAA itself does not define the word “employer,” but this court has done so, adopting a definition cоnsistent with that used in other circuits. In
Central States, SE &
SW
Areas Pension Fund v. Central Transport, Inc. (“Central Transport
”), we held that an “employer” under the MPPAA is “a person who is
obligated to contribute
to a plan either as a direct employer or in the interest of an employer of the plan’s participants.”
We emphasized in
Central Transport
that “[t]he appropriate inquiry is whether the alleged employer had an obligation to contribute [to the pension fund] as well as the nature of that obligation.”
The import of the decision in
Central Transport
is clear — an “employer” for purposes of MPPAA liability is an entity that has assumed a contractual obligation to make contributions to a pension fund. In explaining this conclusion, the
Central Transport
panel drew heavily on the Eighth Circuit’s decision in
Rheem,
a case involving a fact pattern very similar to that presented here. In
Rheem,
the plaintiff leased fifteen truck drivers from a lessor that was signatory to a CBA, establishing the lessor’s obligation to contribute to a pension fund on behalf of the leased drivers. When the lessor withdrew from the pension fund, the fund asserted that the plaintiff lessee, by virtue of its lease agree
*461
ment, was a “joint employer” for purposes of liability under the MPPAA. The Eighth Circuit rejected the pension fund’s position, hоlding that it was the lessor, and not the plaintiff lessee, that “was contractually bound to make pension contributions,” and that it was the lessor, not the lessee, that had “signed the collective bargaining agreement creating the obligation to contribute to [the pension fund].”
Rheem,
Transpersonnel contends that Central Transport and Rheem are distinguishable because here there is a provision in the lease agreement requiring Roadway as lessee to reimburse the lessor/employer Transpersonnnel for the latter’s contributions to the drivers’ pension fund. The district court relied upon Roadway’s reimbursement obligation to conclude that Roadway was a “joint employer” for purposes of the MPPAA.
In our view, however, Roadway’s reimbursement obligation does not take this case outside the core holdings of Central Transport and Rheem. Stated differently, the obligation to reimburse for contributions made by another is not the equivalent of an obligation to contribute in the first instance, and this distinction is important for purposes of Central Transport’s definition of “employer” under the MPPAA.
It is undisputed in this case that Roadway had no agreement whatsoever with the Union and no contractual obligation to make contributions to the pension fund. In its lease agreement with Transperson-nel, Roadway agreed to reimburse Tran-spersonnel for whatever pension plan contributions
Transpersonnel
made for the employees in question pursuant to its own contractual obligation to the Union. More specifically, the lease agreement states that Rоadway “agrees to reimburse Lessor, at cost, for all ... pension fund contributions ... paid ... on behalf of Lessor’s employees as a result of a union agreement obligation.” By its terms, this obligation of reimbursement does not arise until
after
a contribution has been made, and extends only to amounts actually contributed. If Transpersonnel made pension fund contributions that were too small, or omitted contributions, the pension fund could not look to Roadway for the balance as Roadway was only contractually obligated to reimburse Transpersonnel for the actual amounts Transpersonnel contributed. Roadway would have no obligation to make up the difference because it was not contractually obligated to contribute to the pension fund in the first place.
Central States,
Moreover, under the terms of the lease agreement, Transpersonnel retained sole responsibility for calculating the amounts it owed to the pension fund рursuant to its CBA with the Union, and Transpersonnel was required to make those payments with its own funds. 3 After the calculations were made and payments contributed, Transpersonnel could turn to Roadway for reimbursement of amounts actually paid, but the lease agreement did not permit Transpersonnel to bill Roadway for аmounts owed to the fund that had not previously been paid by Transpersonnel pursuant to its contractual obligation to *462 contribute. There is nothing in the parties’ contract that would have permitted Roadway to dispute the amounts paid into the fund by Transpersonnel, to make its own calculation of the amount owed, to request a refund of erroneously large payments, to have any input into the terms of the CBA, or, most importantly, to make any payments directly to the pension fund at all.
Accordingly, we find no merit to Tran-spersonnel’s suggestion that it was “merely a conduit” through which pension plan payments passed from Roadway to the fund.
4
The terms of the lease agreement establish that Transpersonnel was the sole entity “contractually bound to make pension contributions” for purposes of “employer” status under the MPPAA.
Rheem,
The district court cited Central Transport but did not apply it, concluding that the case did not answer the question of whether “more than one entity may qualify as an ‘employer’ under the MPPAA.” But the definition of “employer” adopted in Central Transport is one of general application and does not turn on whether оnly one — or more than one — putative MPPAA “employer” is asserted. Indeed, Rheem— cited at length and with approval in Central Transport — specifically addressed whether more than one entity may qualify as an employer under the MPPAA.
As we have noted, at issue in
Rheem
was whether the lessor and lessee of truck drivers could be considered “joint employers” for purposes of MPPAA withdrawal liability — exactly the same question presented here.
See Rheem,
The district court fоund support for its conclusion that Roadway was an MPPAA “employer” in the holdings of three district court cases, each of which predate our decision in Central Transport and the Eighth Circuit’s decision in Rheem. To the extent that these cases apply a definition of an MPPAA “employer” that differs from that adopted by this court in Central *463 Transport, they are inconsistent with currently applicable circuit precedent and, in any event, are not controlling here. 5
Accordingly, for the foregoing reasons, the judgment of the district court is Reversed and the case is REMANDED for further proceedings consistent with this opinion.
Notes
. Although 29 U.S.C. § 1401(a)(1) specifies that "[a]ny dispute between an employer and the plan sponsor of a multiemployer plan ... shall be resolved through arbitration,” the threshold question of whether a company is an "employer” may be submitted to a court prior to arbitration.
See Banner Indus. v. Cent. States Pension Fund,
. The parties have not raised the dismissal of Count II on appeal, and therefore we do not address it further.
. The lease agreement provides that "Lessor will have sole control and responsibility for ... collective bargaining agreements and related items concerning drivers furnished to Lessee under this Agreement.”
. This case is distinguishable from
Korea Shipping Corp. v. NYSA-ILA Pension Trust Fund,
. The cases cited by the district court were
Am. Stevedoring Corp. v. Burlington Indus., Inc.,
No. 85 C 4180,
