CONTENTS
- 1. Overview of the Claim for Return of Unjust Enrichment | The Sale of an Industrial Site and the Onset of the Unjust Enrichment Dispute
- - The Private-Law Validity of a Contract Violating the Disposal Restriction
- - The Lower Court's Determination: The Contract Is Void Due to Violation of a Mandatory Provision
- 2. The Supreme Court's Determination in the Claim for Return of Unjust Enrichment | The Disposal Restriction Is Merely a Regulatory Provision
- 3. The Significance of the Judgment in the Claim for Return of Unjust Enrichment | Setting Out Criteria for Distinguishing a Statutory Violation From Contractual Invalidity
- - Practical Checkpoints in a Claim for Return of Unjust Enrichment
1. Overview of the Claim for Return of Unjust Enrichment | The Sale of an Industrial Site and the Onset of the Unjust Enrichment Dispute
The starting point of this claim for return of unjust enrichment was a sales contract concerning an industrial site within an industrial complex.
The defendant transferred the industrial site to a third party in violation of the disposal restriction set forth in Article 40-2(1) of the Act on the Promotion of Industrial Cluster Development and Factory Establishment (hereinafter the "Industrial Cluster Act"), and the plaintiff, on this basis, asserted that the sales contract was void and sought the return of unjust enrichment.
Industrial Cluster Act, Article 40-2 (Disposal of Industrial Sites and the Like for Which No Occupancy Contract Has Been Concluded)
The lower court regarded the disposal restriction as a mandatory provision, held this sales contract to be void, and rendered a judgment recognizing the return of unjust enrichment.
In response, the defendant contended on final appeal that the provision was merely a regulatory provision and that the private-law validity of the contract therefore remained intact.
The Private-Law Validity of a Contract Violating the Disposal Restriction
The central issues in this claim for return of unjust enrichment were as follows.
(2) Whether a sales contract for an industrial site that violates this provision is automatically void
(3) Whether, if the contract is not void, a claim for return of unjust enrichment is available
In other words, the issue was whether a violation of an administrative statute directly results in the private-law invalidity of the contract.
The Lower Court's Determination: The Contract Is Void Due to Violation of a Mandatory Provision
The lower court regarded Article 40-2(1) of the Industrial Cluster Act as a mandatory provision intended to achieve the systematic management of industrial complexes and the prevention of speculation.
Accordingly, it determined that this sales contract, which violated the provision, was void, and that as a result the payment made by the buyer constituted a performance rendered without legal cause.
In other words, the structure of its reasoning was that because the contract was void, the claim for return of unjust enrichment was recognized.
2. The Supreme Court's Determination in the Claim for Return of Unjust Enrichment | The Disposal Restriction Is Merely a Regulatory Provision
The Supreme Court stated that it could not accept the lower court's determination and reaffirmed the following legal principle.
The Court further noted that Article 40-2(1) of the Industrial Cluster Act merely provides for administrative and criminal sanctions and does not expressly deny the private-law validity of the contract.
The Supreme Court determined the provision to be a regulatory provision for the following reasons.
- The purpose of the Industrial Cluster Act can also be achieved through administrative management and criminal punishment.
- The statute is not structured so as to prohibit transactions of industrial sites between private parties altogether.
- Treating such contracts uniformly as void could seriously undermine legal stability.
- It is difficult to conclude that a violation of the disposal restriction in itself carries a marked anti-social or immoral character.
Accordingly, the Court held that the mere fact of a violation of the disposal restriction does not render the sales contract automatically void, and that the lower judgment, which proceeded on the contrary premise, contained an error in its understanding of the applicable legal principles.
In the end, the Supreme Court reversed the part of the lower judgment against the defendant and remanded the case.
3. The Significance of the Judgment in the Claim for Return of Unjust Enrichment | Setting Out Criteria for Distinguishing a Statutory Violation From Contractual Invalidity
This judgment in the claim for return of unjust enrichment carries the following significance.
- A violation of an administrative statute does not directly result in the invalidity of a contract.
- The distinction between a mandatory provision and a regulatory provision must be determined according to the specific circumstances.
- Whether a contract is void has a direct bearing on whether unjust enrichment arises.
- The protection of legal stability is important in transactions of industrial sites.
In particular, the Court made clear that in transactions of land and factories within an industrial complex, the return of unjust enrichment is not recognized on the basis of a statutory violation alone.
Practical Checkpoints in a Claim for Return of Unjust Enrichment
Category | Practical Considerations |
Nature of the Provision | Whether the statute in question is a validity provision or a regulatory provision |
Legislative Purpose | Whether it concerns administrative control or also contemplates limiting private-law validity |
Degree of Violation | Whether a marked anti-social or immoral character is present |
Course of the Contract | Whether it has been performed over a long period and whether third-party interests have formed |
Existence of Unjust Enrichment | Whether the premise of contractual invalidity is satisfied |
Transactions tied to industrial sites, development projects, and various permits and approvals are not confined to civil contract issues; they are an area where administrative law, criminal law, and real estate law intersect.
Depending on how the legal characterization is framed, that is, whether the contract violates a regulatory provision or a mandatory provision, liability for the return of billions of won may turn one way or the other.
How the nature of the statutory provision is established in the early stages of litigation strategy is the key point.
At Daeryun Law Firm LLP, in related cases, attorneys experienced in construction and civil matters analyze the legal principles of contractual invalidity in detail and examine the nature of the relevant administrative statutes on multiple levels.
In addition, through collaboration with attorneys experienced in administrative matters, the firm distinguishes the purpose of administrative regulation from the assessment of private-law validity, presents a structured rationale that the court can find persuasive, and, drawing on practical experience accumulated in industrial complex and real estate transaction cases, accurately identifies the essence of the dispute.
Where the existence of unjust enrichment is at issue, strategic review from the contract stage through to the litigation response is necessary.
If you would like assistance, you are welcome to proceed with a 🔗real estate attorney legal consultation booking.
