Civil Law and UAE — Ultra-Basic Unjust Enrichment Keywords Revision Set

1. Meaning of Unjust Enrichment

Unjust enrichment means that one person obtains a benefit or becomes richer without a sufficient legal basis, while another person suffers a corresponding loss or disadvantage.

Ultra-basic formula

Enrichment + Corresponding Loss + No Legal Justification = Unjust Enrichment

In UAE civil law, unjust enrichment is part of the law of obligations and operates as a basis for restitution.

2. Core Keywords

3. Basic Elements

For examination purposes, remember E-L-N-R:

E — Enrichment

The defendant has obtained a benefit.

L — Loss

The claimant has suffered a corresponding loss or disadvantage.

N — No legal basis

There is no valid legal justification for the defendant's retention of the benefit.

R — Restitution

The law may require restoration of the benefit or its value.

Memory sentence

“One gets a benefit, another bears the loss, there is no legal basis, so restitution may follow.”

4. Enrichment

Enrichment does not necessarily mean receiving cash.

It may involve:

• receiving money;
• receiving property;
• avoiding an expense;
• receiving services without proper legal basis;
• improvement of property;
• receiving a benefit through an erroneous payment;
• retaining money that should legally be returned.

Example

A accidentally transfers AED 50,000 to B.

B receives an economic benefit.

If B has no legal entitlement to the money, the circumstances may give rise to a restitutionary obligation.

5. Impoverishment / Loss

The second side of the equation is the claimant's disadvantage.

Example

A pays B AED 50,000 by mistake.

• B: enriched by AED 50,000.
• A: impoverished by AED 50,000.
• Connection: A's payment caused B's enrichment.
• Legal basis: If B was not entitled to the money, the legal basis for retention may be absent.

6. Absence of Legal Basis

This is one of the most important concepts.

A person can legitimately become richer.

For example:

Valid sale → payment → seller receives money

Here, the contract supplies the legal basis.

Therefore:

Enrichment alone does not automatically equal unjust enrichment.

The important question is:

Why is the defendant entitled to keep the benefit?

7. Contract and Unjust Enrichment

Contract and unjust enrichment must be distinguished.

Valid contract

A → sells goods → B
B → pays price → A

The payment has a contractual legal basis.

No valid basis

A → accidentally pays B
B → has no entitlement

A restitutionary issue may arise.

Exam rule

Where a valid contractual basis governs the transfer, the claim normally has to be analysed through the contract first.

8. Payment by Mistake

Payment by mistake is an important practical example.

Example

A company accidentally pays an invoice twice.

First payment:

Valid payment

Second payment:

Potential overpayment

If the second payment has no legal basis, recovery may be available under applicable UAE law.

Keywords

Mistake → payment → enrichment → absence of debt → recovery

9. Restitution

Restitution is the principal idea associated with unjust enrichment.

Meaning

Restitution = restoration of an unjustly obtained benefit.

Possible forms include:

• returning money;
• returning property;
• restoring a benefit;
• paying its appropriate value where physical restoration is impossible or inappropriate.

10. Unjust Enrichment vs Compensation

These concepts should not be confused.

Memory

Compensation asks: “What did the claimant lose?”

Restitution asks: “What did the defendant improperly receive?”

11. Unjust Enrichment vs Contract

12. Unjust Enrichment vs Tort

Tort / harmful act

Focus:

Wrongful conduct → damage → liability

Unjust enrichment

Focus:

Benefit → corresponding loss → absence of legal basis → restitution

A single dispute can potentially involve more than one legal theory, but the elements and remedies should not be confused.

13. Good Faith

Good faith can become relevant when determining:

• whether a person knew about the absence of entitlement;
• whether money/property was retained innocently;
• whether the recipient knew of another person's claim;
• the appropriate extent of restitution;
• treatment of benefits received or consumed.

Simple distinction

Good-faith recipient: may have different legal consequences from a person who knowingly retains an unjust benefit.

14. Unjust Enrichment and Property

Unjust enrichment can arise in property situations.

Example

A's money is mistakenly used to improve B's property.

Potential questions include:

1. Did B receive a benefit?
2. Did A suffer a corresponding disadvantage?
3. Was there a legal basis?
4. Was B aware of the circumstances?
5. What form of restitution is legally appropriate?

15. Unjust Enrichment and Services

A person may receive services without paying where there is no valid contractual or other legal basis for retaining the benefit.

But the existence of enrichment alone does not automatically establish liability.

The court must examine:

Agreement + circumstances + legal basis + benefit + loss + applicable legislation

16. Important Defences / Limitations

A restitutionary claim may encounter difficulties where:

1. Valid legal basis exists

Example:

A valid contract authorises the payment.

2. No corresponding loss

The claimant cannot establish the required disadvantage.

3. No enrichment

The defendant did not receive a legally relevant benefit.

4. Lack of causal connection

The claimant's loss and defendant's benefit are not sufficiently connected.

5. Payment was legally due

If the recipient was legally entitled to the payment, unjust enrichment may not arise.

6. Applicable limitation rules

A claim may be affected by applicable limitation or procedural rules.

17. UAE Civil-Law Structure

For revision, place unjust enrichment within this structure:

Civil Law
↓
Obligations
↓
Sources of Obligations
↓
Contracts / Harmful Acts / Beneficial Acts & Unjust Enrichment / Law
↓
Restitution

The UAE's new Civil Transactions Law, Federal Decree-Law No. 25 of 2025, took effect on 1 June 2026 and replaced the former 1985 Civil Transactions Law. Older UAE judgments should therefore be identified as historical authorities when studying the current framework.

18. Case Laws — UAE Unjust Enrichment and Related Restitution Principles

Case-law caution: UAE case reporting is less comprehensive and less easily searchable than common-law precedent systems. Several important civil cases concern the underlying principles of obligations, payment, compensation, contracts and restitution rather than using the English common-law label “unjust enrichment.” Also, many authorities pre-date the new Civil Transactions Law effective 1 June 2026.

Case 1 — Federal Supreme Court, Cassation No. 524 of 2000

Topic: Abuse of rights / civil obligations

Principle

The UAE civil-law system does not treat the existence of a formal right as permitting unlimited exercise of that right. The manner and circumstances of exercising rights remain subject to legal limitations.

Relevance to unjust enrichment

Where a person attempts to retain or obtain a benefit through an improper exercise of a right, the court can examine the underlying legal justification.

Revision keyword:
Right → limitation → improper benefit

Case 2 — Abu Dhabi Court of Cassation, Case No. 55 of 2016

Topic: Abuse of rights / civil liability

Principle

The exercise of rights must remain within the boundaries recognised by UAE civil law.

Relevance

The case is useful for understanding the broader UAE principle that legal entitlement and improper retention or exercise of a benefit are separate questions.

Revision keyword:
Legal right ≠ unlimited entitlement

Case 3 — Federal Supreme Court, Cassation No. 880 of 2021

Topic: Compensation and legally recognised loss

Principle

The Federal Supreme Court considered the scope of compensable damage, including circumstances involving additional material loss, future damage and loss of opportunity where legally established.

Relevance

This case is primarily a compensation authority rather than a pure unjust-enrichment case. It is useful for distinguishing:

Compensation → claimant's damage

from

Restitution → defendant's unjust benefit

Case 4 — Dubai Court of Cassation, Appeal No. 222 of 2005

Topic: Contractual compensation / agreed compensation

Principle

The UAE civil-law framework historically allowed judicial examination of agreed compensation in circumstances prescribed by law.

Relevance

It helps demonstrate the distinction between:

Contractual entitlement → contractual remedy

and

Unjustified benefit → restitutionary analysis

This is a pre-2026 authority.

Case 5 — DNB Bank ASA v Gulf Eyadah Corporation & Another [2015] DIFC CA 007

Topic: Recognition and enforcement / jurisdiction

Principle

The DIFC Court considered important issues concerning recognition and enforcement of foreign judgments within the UAE's multi-jurisdictional judicial framework.

Relevance

Although not a pure unjust-enrichment case, it is useful when a restitutionary judgment or foreign judgment must be enforced across UAE jurisdictions.

Revision keyword:

Judgment → recognition → enforcement → recovery

Case 6 — IDBI Bank Ltd v Amira C Foods International DMCC & Karan A. Chanana [2020] DIFC CFI 022

Topic: Commercial obligations / jurisdiction

Principle

The case illustrates how commercial disputes involving financial obligations can interact with the DIFC Court's jurisdictional framework.

Relevance

Useful for understanding that the legal basis of a monetary claim must be identified before selecting the appropriate remedy.

Revision keyword:

Monetary claim → legal basis → jurisdiction → remedy

Case 7 — Access Group DWC LLC v Proex Partners Ltd, [2023] DIFC CFI 091

Topic: Contractual obligations / good faith

Principle

The DIFC Court considered contractual rights and obligations within the context of good faith and contractual performance.

Relevance

Good faith is important when determining whether a party's retention or exercise of a contractual benefit is legally justified.

Important: This is a DIFC Court authority, not a binding precedent of the onshore UAE Federal Supreme Court.

19. Six-Case Ultra-Quick Revision Table

20. Ultra-Basic Problem Question Method

If an exam asks:

“Discuss unjust enrichment under UAE civil law.”

Use this order:

Step 1 — Define

Unjust enrichment concerns a benefit obtained without sufficient legal justification where another person suffers a corresponding disadvantage.

Step 2 — Elements

Enrichment + Loss + Causal connection + No legal basis

Step 3 — Explain restitution

The principal consequence is restoration of the unjust benefit or its appropriate value.

Step 4 — Distinguish

Compare:

• contract;
• compensation;
• tort/harmful act;
• unjust enrichment.

Step 5 — Discuss examples

Use:

• mistaken payment;
• duplicate payment;
• unauthorised benefit;
• unjustified property improvement;
• services received without adequate legal basis.

Step 6 — Add case law

Mention at least six authorities, while clearly distinguishing onshore UAE cases from DIFC cases and pre-2026 authorities from current law.

21. Rapid Recall

U-E-L-N-R

U — Unjust
No sufficient legal justification.

E — Enrichment
Defendant receives a benefit.

L — Loss
Claimant suffers corresponding disadvantage.

N — No legal basis
Benefit cannot properly be retained.

R — Restitution
Benefit/value may have to be restored.

One-line exam definition

Unjust enrichment in UAE civil law is the principle that a person should not retain a benefit obtained without sufficient legal basis at another person's corresponding expense, subject to the applicable statutory requirements and available remedies.

Final memory formula

BENEFIT → LOSS → CONNECTION → NO LEGAL BASIS → RESTITUTION

That is the ultra-basic core to remember for UAE unjust enrichment.