Arbitration is based on consent. That principle sounds simple until a dispute involves a parent company that negotiated the contract, a guarantor that secured the payment obligations, an agent that signed for another entity, an assignee that later acquired the receivable, or a successor that steps into the rights and obligations of an original party.
In the UAE, the starting point remains Federal Law No. 6 of 2018 Concerning Arbitration, as amended by Federal Decree-Law No. 15 of 2023. The 2023 amendment changed Articles 10, 23, 28 and 33, but did not replace the core provisions governing capacity, written consent, legal succession, tribunal jurisdiction or joinder.
The general rule is conservative: a true stranger to an arbitration agreement should not be compelled to arbitrate merely because it is commercially connected to a signatory. But UAE law and case law recognise situations in which a person who did not physically sign the clause may nevertheless be treated as a party, successor or transferee of the arbitration agreement.
The correct analysis is therefore not “signatory versus non-signatory” alone. It is: what is the legal basis for saying this person consented to, inherited, received, controlled, or is otherwise bound by the arbitration agreement?
The statutory starting point is consent, capacity and writing
Article 4 of the Arbitration Law provides that an arbitration agreement may be concluded only by a natural person with legal capacity or by the representative of a legal person who is authorised to conclude the arbitration agreement. Otherwise, the agreement is null and void.
Article 7 separately requires the arbitration agreement to be in writing. The writing requirement can be satisfied through a signed document, written or electronic communications, a clear incorporation by reference, or the other written mechanisms recognised by Article 7.
These provisions create the basic discipline for non-signatory cases: the tribunal or court must still be able to identify a legally sufficient basis for arbitral consent.
Article 4 expressly binds legal successors
Article 4(4) contains an important statutory exception to the idea that arbitration binds only the original contracting party. Unless the parties agree otherwise, the arbitration agreement does not terminate merely because a party dies and may be enforced by or against that party's legal successor.
This reflects the broader idea that some contractual rights and obligations continue through succession even though the successor never signed the original document personally.
Assignment can transfer the arbitration agreement with the underlying right
Assignment is one of the clearest areas in which a non-original party can become bound.
In Dubai Court of Cassation Case No. 1603/2022 (Commercial), judgment of 30 March 2023, the Court treated an arbitration clause as transferring with assigned contractual rights even though the assignee had not executed a fresh arbitration agreement expressly repeating the clause.
The decision is significant because it distinguishes between incorporating an arbitration clause into a new contract by reference and transferring a contractual right that already carries an arbitration clause. In the latter situation, the dispute-resolution mechanism can travel with the transferred right, subject to the governing documents and applicable law.
Recent 2025 case law reinforces the assignment principle
Dubai Court of Cassation Decision No. 1685/2025, issued on 30 December 2025, again addressed the interaction between assignment and arbitration.
The practical position is increasingly clear: where rights under a contract containing an arbitration clause are assigned, the arbitration provision may follow those rights to the assignee unless the legal or contractual structure indicates otherwise.
For drafting, the safest approach remains to state expressly in the assignment that the assignee accepts the dispute-resolution clause and that the relevant parties consent to its continuation.
Universal succession and particular succession should be distinguished
A universal successor may step into the legal position of an original party through death or another form of universal succession. A particular or special successor may acquire a defined asset, right, contract or receivable through assignment or transfer.
The arbitration analysis should ask what was transferred, whether the underlying right is inseparable from the arbitration clause, whether the transfer document excludes or modifies arbitration, whether required notices or consents were given, and whether the person executing the transfer had authority to bind the transferee.
A parent company is not automatically bound because its subsidiary signed
UAE law does not create a general rule that every company in a corporate group becomes party to every arbitration agreement signed by another group member. Separate corporate personality remains the starting point.
A parent company should therefore not be joined merely because it owns the signatory, uses a common brand, shares directors, issues group policies, benefits economically from the contract or appears in consolidated accounts.
Something more is required to establish that the parent itself is properly treated as a party to the arbitration agreement.
Dubai Court of Cassation Case No. 756/2024 is an important development
In its judgment of 19 November 2024 in Dubai Court of Cassation Case No. 756/2024 (Commercial), the Court addressed an arbitration in which one company argued that it had not signed the underlying construction contract containing the arbitration clause.
The Court stated that the party bound by an arbitration agreement is not necessarily limited to the formal signatory and indicated that the clause may extend between a subsidiary and parent depending on which entity issued the relevant instructions and exercised decisive control over the contract's execution or performance.
This is important, but it should be read cautiously. The case also involved a procedural point under Article 19: the tribunal had already issued a preliminary ruling affirming jurisdiction, and the challenger did not apply to the competent court within the statutory 15-day period. The Court treated the missed challenge as final.
The decision should therefore not be converted into a broad proposition that parent companies are always bound. The factual evidence of instruction, performance and control—and the procedural handling of the jurisdiction objection—remain critical.
Control must be linked to the contract, not merely ownership
Where a claimant seeks to bind a parent company, relevant evidence can include who negotiated the contract, who issued instructions during performance, who approved variations, who controlled payments, which entity supplied resources, whether correspondence treated the parent as the real decision-maker and whether the parent itself asserted rights under the contract.
Ordinary shareholder supervision is different from evidence that the parent was itself the substantive actor in formation or performance.
Do not assume a broad group-of-companies doctrine
Some international arbitral systems have discussed a group-of-companies doctrine under which a non-signatory affiliate can be bound based on participation, control and common intention.
UAE practice is more fact-specific and consent-focused. The safer formulation is that recent Dubai case law can permit extension in appropriate facts where the non-signatory's conduct demonstrates that it was effectively the party directing or performing the contractual relationship. Corporate affiliation alone is not enough.
Guarantors require separate drafting
A guarantee is often executed alongside a facility agreement, shareholders' agreement, supply contract or acquisition agreement that contains an arbitration clause. But the guarantor's obligation can be legally independent from the principal debtor's contract.
This creates a common drafting trap: the primary agreement contains arbitration, while the guarantee either contains no dispute-resolution clause or refers generally to the underlying transaction without clearly incorporating arbitration.
A 2026 Dubai judgment confirms the danger
In a recent Dubai Court of Cassation decision concerning cross-border finance and personal guarantees, the guarantor attempted to rely on an arbitration clause contained in a separate agreement to defeat proceedings before the Dubai courts.
The Court rejected that argument on the basis of contractual relativity and consensual arbitration. Because the guarantor was not a party to the arbitration agreement on which he relied, he could not use it to oust the court's jurisdiction over the guarantee claim.
The practical lesson is straightforward: if the parties intend the guarantor to arbitrate, the guarantee itself should contain or clearly incorporate the arbitration agreement.
A general reference to the underlying agreement can be risky
Article 5 permits incorporation by reference, and Article 7 recognises clear written incorporation. But the reference should make the arbitration clause part of the guarantee or related contract with sufficient clarity.
Better drafting is to state that the identified arbitration clause of the principal agreement is incorporated into the guarantee as if set out in full. That is stronger than a statement that the guarantor guarantees “all obligations” under the principal contract, which addresses liability but may not clearly demonstrate arbitral consent.
Agents raise two different questions
Agency situations should distinguish whether the agent itself is a party to arbitration and whether the agent validly bound the principal to arbitration.
An agent who signs a contract “for and on behalf of” a disclosed principal may be acting only in a representative capacity. In that situation the principal can be the real contracting party even though the principal's own physical signature does not appear.
But Article 4 requires the representative of a legal person to have authority to conclude the arbitration agreement.
Authority to contract is not always the same as authority to arbitrate
UAE arbitration law has historically treated agreement to arbitrate as requiring specific authority because arbitration displaces the ordinary jurisdiction of the courts.
The safest corporate practice is therefore to ensure the representative signing the contract has express authority to agree to arbitration.
Authority can arise from constitutional documents, a board or shareholder resolution, a power of attorney, a valid managerial power under applicable corporate law or another legally recognised source.
An authority defect can create annulment risk
Article 53 permits annulment arguments where there was no valid arbitration agreement or the necessary capacity or authority was lacking.
For that reason, parties should verify signatory authority at the contract stage rather than after an award has been rendered. Arbitration-clause authority should be treated with the same seriousness as authority to dispose of major assets or issue material guarantees.
Ratification and later conduct may become relevant
Where initial authority is unclear, later conduct can become important to the factual analysis. Relevant questions include whether the principal accepted and performed the contract, relied on its rights, participated in arbitration without a timely jurisdictional objection, expressly confirmed the agreement or otherwise adopted the representative's acts.
However, parties should not deliberately rely on implied ratification where express written arbitral authority can be obtained.
Article 19 makes jurisdiction objections time-sensitive
The arbitral tribunal has power under Article 19 to rule on its own jurisdiction, including objections concerning the existence or validity of the arbitration agreement or whether the dispute falls within its scope.
If the tribunal issues a preliminary decision affirming jurisdiction, a party may request the competent court to decide the issue within 15 days of notification of that decision.
Failure to use that route can be decisive. The 756/2024 judgment illustrates the risk: the jurisdictional challenger did not bring the Article 19 challenge within time and was prevented from reopening that issue later.
A non-signatory objection should be raised immediately
A company that says it never agreed to arbitrate should not participate deeply in the merits and wait until enforcement to raise the issue.
Its strategy should consider the response to the request for arbitration, reservation of jurisdictional rights, the tribunal's jurisdiction timetable, whether a preliminary jurisdiction ruling should be requested, the Article 19 court deadline and the institutional rules governing joinder.
Article 22 does not permit joinder of a true stranger
Article 22 permits a tribunal to authorise intervention or joinder of a third party after all relevant parties have had an opportunity to be heard, but only where the third party is itself a party to the arbitration agreement.
Joinder is therefore procedural. It does not manufacture substantive consent where none exists.
DIAC Rules provide a modern joinder mechanism
Article 9 of the DIAC Arbitration Rules 2022 allows additional parties to be joined before tribunal constitution where all relevant parties consent in writing or the DIAC Arbitration Court is prima facie satisfied that the additional party may be a party to the arbitration agreement.
After constitution, the tribunal can permit joinder where all parties consent or where it is satisfied that the additional party is a party to the arbitration agreement, subject to the Rules and relevant circumstances.
The institutional joinder decision remains without prejudice to the tribunal's final jurisdictional ruling.
arbitrateAD also addresses joinder expressly
Article 11 of the arbitrateAD Arbitration Rules 2024 permits joinder where the parties agree or where the Court is satisfied that the proposed additional party is prima facie subject to the Centre's jurisdiction.
After the tribunal is constituted, the tribunal considers the request and factors including jurisdiction, timing, conflicts and procedural impact. Again, procedural joinder does not eliminate the need for an underlying jurisdictional basis.
ADGM law expressly protects consent in joinder
The ADGM Arbitration Regulations provide that an additional party may be joined where that person is a party to the arbitration agreement or has consented to joinder.
This reflects the same basic principle: multi-party arbitration can be procedurally efficient, but consent remains the jurisdictional foundation.
DIFC and ADGM cases can use a different analytical vocabulary
Arbitrations seated in the DIFC or ADGM operate under separate common-law-based arbitration regimes and court systems. Questions involving agency, assignment, assumption, estoppel or corporate relationships can therefore be analysed through different doctrines from those used by onshore UAE courts.
The law governing the arbitration agreement, the seat and the institutional rules must be identified before assuming that an onshore Dubai precedent determines the result.
Adding a non-signatory defendant does not necessarily defeat arbitration
A claimant may try to avoid arbitration by bringing court proceedings against both a signatory and a related non-signatory.
The Dubai Court of Cassation addressed this problem in Case No. 956/2025 (Commercial). The Court's approach was that adding a non-signatory does not automatically pull the entire dispute into court. The non-signatory must be a genuine and necessary party rather than a nominal defendant added to circumvent the arbitration clause.
The transaction should therefore be analysed by substance: what relief is sought, against whom, and under which contract?
Multiple contracts create a separate non-signatory problem
Complex transactions frequently contain a main agreement, guarantee, side letter, parent-company undertaking, supply agreement, shareholders' agreement, security document and assignment.
If those documents contain inconsistent dispute-resolution clauses, a later dispute can fragment between arbitration and court litigation.
The safest approach is to adopt a coordinated dispute-resolution architecture at signing.
Draft the entire transaction package, not one contract at a time
Where all related parties are intended to arbitrate, related documents should use compatible clauses addressing the same institution, seat and language and should expressly coordinate joinder, consolidation, guarantors, security providers, successors, permitted assigns, agent authority and interim relief.
A transaction with five related contracts and three dispute forums creates avoidable jurisdictional risk.
Assignment clauses should address dispute-resolution transfer expressly
An assignment provision can state that any permitted assignee takes the assigned rights together with the arbitration agreement and that each relevant party consents to that transfer.
Where obligations are also transferred, a novation may be more appropriate than a simple assignment, and the dispute-resolution clause should be repeated expressly in the novation.
Guarantees should contain their own arbitration wording
The guarantee should state whether disputes under the guarantee are arbitrated, whether the same clause as the principal contract applies, whether guarantee claims can be consolidated with the principal dispute, whether the guarantor consents to joinder, the governing law of the guarantee and whether urgent court relief remains available.
This avoids the uncertainty seen where guarantors attempt to rely on arbitration clauses they never adopted.
Parent-company undertakings should not rely on implied participation
If a parent is intended to guarantee performance, provide direct obligations or stand behind a subsidiary contract, the parent should sign a document that expressly states whether disputes are subject to arbitration.
Relying on later arguments about control, instructions or group involvement is less predictable and more expensive.
Agents should have express arbitral authority
A power of attorney or corporate authorisation used for signing should state expressly that the representative can agree to arbitration and execute contracts containing arbitration clauses. For significant transactions, the parties should retain evidence of that authority with the execution documents.
The law governing the arbitration agreement can change the analysis
Not every UAE-connected arbitration agreement is governed substantively by UAE law. The contract may select another governing law, the seat may be outside the UAE, or the applicable conflict-of-laws analysis may point to another system.
That matters because doctrines such as agency, assumption, estoppel, assignment or corporate veil piercing can be treated differently across jurisdictions.
A non-signatory analysis should therefore identify separately:
- the law governing the main contract;
- the law governing the arbitration agreement;
- the law of the seat;
- the applicable institutional rules; and
- the law likely to apply at the enforcement stage.
Enforcement risk should be considered before adding a non-signatory
Even where a tribunal accepts jurisdiction over a non-signatory, the award may later face an annulment or enforcement challenge if the legal basis for consent is weak.
Article 53 expressly recognises absence or invalidity of the arbitration agreement and capacity defects as grounds for challenging an award.
The claimant should therefore ask not only whether joinder is procedurally available, but whether an eventual award against the additional party is likely to survive court review.
Non-signatory analysis is not the same as piercing the corporate veil
Arguments about arbitration consent should be kept separate from substantive claims that a parent or shareholder is liable for a subsidiary's debts.
A tribunal may have jurisdiction over a parent without ultimately finding it liable, or a court may recognise a substantive liability theory while still finding that no arbitration agreement binds the parent.
Jurisdiction and merits should not be collapsed into one question.
A practical non-signatory matrix
| Person / entity | Typical UAE arbitration analysis |
|---|---|
| Parent company | Not automatically bound; examine actual instructions, decisive control, performance and evidence of consent or substantive participation. |
| Subsidiary | Separate personality applies; extension requires a legally sufficient factual and consensual basis. |
| Guarantor | Not automatically bound by the principal contract's arbitration clause; guarantee should expressly incorporate or reproduce it. |
| Agent | Can bind a principal where acting with legally sufficient authority; authority to arbitrate must be established. |
| Assignee | Arbitration clause can travel with assigned contractual rights, subject to the transfer structure and applicable law. |
| Legal successor | Article 4(4) expressly permits enforcement by or against a legal successor unless the parties agreed otherwise. |
| Nominal third-party defendant | Mere joinder in court does not necessarily defeat arbitration between the real parties to the arbitration agreement. |
| Third party seeking joinder | Article 22 and institutional rules require an underlying basis showing that the party is bound or has consented. |
Practical checklist before asserting jurisdiction over a non-signatory
- Identify the governing arbitration law. Onshore UAE, DIFC or ADGM can matter.
- Identify the arbitration-agreement law. Do not assume it is identical to the substantive contract law.
- Locate the written consent. Signature, incorporation, correspondence, assignment or succession?
- Check authority. Was the representative authorised to agree to arbitration?
- Map the corporate structure. Parentage alone is not enough.
- Collect performance evidence. Who gave instructions and controlled the contract?
- Review guarantees separately. Do they contain or incorporate arbitration?
- Review assignments and novations. Did the arbitration clause travel with the transferred rights?
- Check institutional joinder rules. DIAC, arbitrateAD, ICC and others have different procedures.
- Raise jurisdiction objections immediately. Article 19 deadlines can be decisive.
- Preserve evidence of consent and authority. Do not rely on oral recollection after a dispute arises.
- Coordinate all related contracts. Avoid inconsistent forums across one commercial transaction.
- Consider enforcement from the start. A jurisdiction theory should survive later court review.
Key takeaway
UAE arbitration law remains anchored in consent, but the identity of the party bound by an arbitration agreement is not always limited to the person whose signature appears beneath the clause.
Legal successors and assignees can inherit or receive an arbitration agreement with the underlying rights. An authorised agent can bind a principal. A parent or subsidiary may, in fact-specific circumstances, be treated as a party where the evidence shows that it issued decisive instructions or exercised substantive control over formation or performance. Corporate affiliation alone is not enough.
Guarantors require particular caution. A guarantor does not automatically acquire the right—or obligation—to arbitrate simply because the guaranteed transaction contains an arbitration clause. Recent Dubai case law reinforces the importance of express incorporation in the guarantee itself.
Procedure is equally important. Article 19 gives a short route to challenge a tribunal's preliminary jurisdiction decision, and Article 22 allows joinder only where the third party is legally within the arbitration agreement. Institutional rules facilitate joinder, but they do not create consent where no jurisdictional basis exists.
The strongest drafting strategy is therefore simple: where a parent, guarantor, agent, assignee or successor is intended to participate in arbitration, say so expressly in the transaction documents rather than relying on a later non-signatory argument.
HZ Legal can assist companies, shareholders, lenders, guarantors, contractors, assignees and investors with UAE arbitration-clause drafting, multi-party transaction structures, non-signatory jurisdiction analysis, joinder applications, assignment and succession issues, Article 19 jurisdiction challenges, annulment and enforcement proceedings.
Official and authoritative sources
- UAE Legislation — Federal Law No. 6 of 2018 Concerning Arbitration.
- UAE Legislation — official downloadable text of Federal Law No. 6 of 2018.
- Dubai International Arbitration Centre — DIAC Arbitration Rules 2022.
- Dubai International Arbitration Centre — model arbitration clause and arbitration services.
- Abu Dhabi International Arbitration Centre — arbitrateAD Arbitration Rules 2024.
- Abu Dhabi Global Market — Arbitration Regulations and arbitration framework.
- Dubai Court of Cassation Case No. 756/2024 (Commercial) — translated judgment concerning parent/subsidiary extension and jurisdiction challenge.
- Dubai Court of Cassation Decision No. 1685/2025 — assignment and arbitration interplay.
- International Bar Association — analysis of Dubai Court of Cassation Case No. 956/2025 concerning a nominal non-signatory defendant.
- Al Tamimi & Company — 2026 Dubai Court of Cassation analysis concerning a non-signatory guarantor.
This article provides general legal and regulatory information only and does not constitute case-specific arbitration or litigation advice. Non-signatory jurisdiction is highly fact-sensitive and can depend on the seat, law governing the arbitration agreement, corporate and agency relationships, assignment or succession documents, institutional rules and the way jurisdiction objections are raised. Current contract documents and procedural deadlines should be reviewed before commencing arbitration or court proceedings.