In Pari Delicto Exception: Unjust Enrichment in Illegal Subcontracts

The Supreme Court's 2014 ruling in Gonzalo v. Tarnate, Jr. (G.R. No. 160600) clarifies a crucial exception to a long-standing principle of contract law. While parties to an illegal agreement generally cannot seek relief from the courts, the doctrine of in pari delicto yields when its rigid application would unjustly enrich one party at the expense of another. This decision offers important guidance for contractors, subcontractors, and businesses dealing with government projects.

The Facts of the Case

In July 1997, the Department of Public Works and Highways (DPWH) awarded Domingo Gonzalo a contract to improve a road section in Mountain Province. Gonzalo then subcontracted the supply of materials and labor to John Tarnate, Jr., who operated under the business name JNT Aggregates. Their agreement required Tarnate to pay Gonzalo a percentage of the contract price upon billing.

Later, Gonzalo executed a deed of assignment entitling Tarnate to a 10% retention fee—amounting to P233,526.13—as rent for equipment Tarnate had used in the project. Gonzalo also authorized Tarnate to process the collection documents with the DPWH. However, Gonzalo unilaterally rescinded the assignment and collected the retention fee himself. Tarnate sued to recover the amount.

The Legal Issue

The central question was whether Tarnate could recover the retention fee despite the illegality of the underlying subcontract. Gonzalo argued that both parties were in pari delicto—in equal fault—and that the courts should leave them where they found them, refusing relief to either.

The Ruling: An Exception to In Pari Delicto

The Supreme Court agreed that both the subcontract and the deed of assignment were illegal. Section 6 of Presidential Decree No. 1594 prohibits contractors from subcontracting or assigning government contracts without the approval of the proper government minister. Since Gonzalo subcontracted without DPWH approval, the subcontract was void. Under Article 1409(1) of the Civil Code, a contract whose object is contrary to law is void. Article 1422 further declares that a contract directly resulting from a previous illegal contract is also void.

The Court likewise rejected the Court of Appeals' finding that Tarnate was less guilty than Gonzalo. Tarnate, a businessman, voluntarily entered the agreements and knew he was not authorized to contract with the DPWH. Both parties were equally at fault.

However, the Court invoked an established exception: in pari delicto does not apply when doing so would contravene public policy. Here, the public policy against unjust enrichment prevailed. Citing Article 22 of the Civil Code, the Court noted that every person who acquires something at another's expense without just or legal ground must return it. Since Tarnate provided equipment, labor, and materials, and Gonzalo received the retention fee that should have gone to Tarnate, allowing Gonzalo to keep the money would unjustly enrich him.

The Court ordered Gonzalo to pay the P233,526.13 with 6% interest per annum from the date of judicial demand. However, it deleted the awards for moral damages, attorney's fees, and litigation expenses, since no damages may be recovered under a void contract.

Practical Takeaways

• Illegal contracts are void. Subcontracting a government project without the required approval violates PD 1594 and renders the agreement unenforceable from the start.
• In pari delicto is not absolute. Courts will set it aside when strict application would result in unjust enrichment, particularly where one party has received a benefit at the other's expense.
• Void contracts produce no damages. Even when recovery is allowed to prevent unjust enrichment, courts will not award moral damages, attorney's fees, or litigation expenses arising from an illegal agreement.
• Document everything. While the Court allowed recovery here, the result depended on clear evidence that Tarnate's equipment was used and that Gonzalo received the funds.
• Seek approval before subcontracting. The safest course is to obtain the necessary government approval before entering any subcontract or assignment involving a public contract.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.