Back-to-back is not enough: UAE construction subcontracts and multiparty arbitration under the 2026 ICC Rules

Subcontracting is essential to major construction projects in the UAE. It allows specialist work packages to be procured efficiently, spreads technical responsibility across the supply chain, and enables main contractors to deliver complex works at scale. Yet subcontracting also creates a familiar dispute problem. The same facts may generate claims under the main contract and the subcontract, but those claims will sit within different legal relationships.

That distinction matters. A back-to-back subcontract may mirror the risk allocation in the main contract, but it does not automatically make the subcontractor a party to the employer-contractor arbitration. Nor does it guarantee that the employer, contractor and subcontractor can all be heard in a single forum. The 2026 ICC Arbitration Rules provide useful tools for joinder, multiple-contract claims and consolidation. They do not, however, remove the need for clear consent and careful drafting.^[1]

For UAE projects, the issue is particularly timely. The 2026 ICC Rules apply to ICC arbitrations commenced on or after 1 June 2026, unless the parties have agreed to submit to an earlier version of the Rules.^[2] The New Civil Code also came into force on 1 June 2026, replacing the 1985 Civil Code.^[3] Parties negotiating new construction contracts now need to think about both developments together.

Why do UAE construction subcontracts create multiparty arbitration risk?

A construction project is usually one project commercially, but several contracts legally. The employer contracts with the main contractor. The main contractor contracts with subcontractors. Consultants, suppliers and specialist package contractors may each sit in separate contractual chains.

UAE law recognises this structure. Article 812 of the New Civil Code defines a ‘muqawala contract’ as a contract by which one party undertakes to manufacture a thing or perform work for consideration.^[4] Article 813 requires the muqawala contract to specify the subject matter, nature, quantity, method of performance, completion period and consideration.^[5] These provisions reflect the importance of identifying each contractual bargain with precision.

The subcontracting provisions then preserve the separation between the main contract and the subcontract. Article 832 permits a contractor to subcontract all or part of the work, unless the contract prohibits subcontracting or the nature of the work requires personal performance.^[6] The same article confirms that the contractor remains liable to the employer for the subcontractor.^[7] Article 833 provides that a subcontractor may not claim from the employer any amount due to the original contractor unless the original contractor has referred the subcontractor to the employer.^[8]

The 1985 Civil Code took a similar approach. Article 890 permitted subcontracting unless prohibited or unless personal performance was required, while Article 891 restricted direct subcontractor claims against the employer absent assignment or referral.^[9] The New Civil Code has therefore not converted the subcontractor into a direct participant in the employer-contractor bargain.

That is the legal starting point. The commercial reality is more complicated. A delay claim may depend on the subcontractor’s performance. A defect claim may require evidence from the specialist trade contractor. A variation dispute may turn on instructions passed through the contractor to the supply chain. If the dispute resolution clauses do not anticipate this, parties may face parallel arbitrations, duplicated evidence and inconsistent findings.

What do the 2026 ICC Rules offer for multiparty construction disputes?

The 2026 ICC Rules contain a dedicated framework for multiple parties, multiple contracts and consolidation. Article 8 deals with joinder of additional parties.^[10] Article 9 allows claims between multiple parties in an arbitration, subject to the relevant jurisdictional and timing rules.^[11] Article 10 allows claims arising out of or in connection with more than one contract to be made in a single arbitration.^[12] Article 11 permits consolidation of two or more pending ICC arbitrations in defined circumstances.^[13]

As regards to joinder, Article 8 requires a Request for Joinder to be submitted to the ICC Secretariat.^[14] If joinder is sought after an arbitrator has been confirmed or appointed, the additional party must accept the constitution of the tribunal and the tribunal must decide to accept the joinder.^[15] In making that decision, the tribunal must consider relevant circumstances, including prima facie jurisdiction, timing, conflicts and the effect on the procedure.^[16]

Consolidation under Article 11 is also carefully limited. The ICC Court may consolidate where the parties have agreed to consolidation, where all claims are made under the same arbitration agreement or agreements, or where the arbitrations are between the same parties, arise from the same legal relationship and involve compatible arbitration agreements.^[17] This gives the ICC Court important case-management power, but it does not create a universal right to consolidate every related project dispute.

The procedural timetable now matters even more. Under Article 24, the tribunal must hold an initial case management conference within 30 days of receiving the file from the Secretariat, subject to extension.^[18] Article 25 provides that no party may make new claims after that initial conference without tribunal authorisation.^[19] For construction parties, this means that joinder, pass-through claims and related subcontract issues should be identified early.

How does UAE arbitration law affect joinder and consent?

Where the arbitration is seated onshore in the UAE, the UAE Arbitration Law must also be considered. Article 7 requires the arbitration agreement to be in writing.^[20] It recognises incorporation by reference where a written contract refers to a model contract, international agreement or other document containing an arbitration clause, provided the reference is clear in treating that clause as an integral part of the contract.^[21]

Article 22 is central to joinder. It allows the tribunal to permit the intervention of a third party, whether at the request of a party or the intervenor, provided that the third party is a party to the arbitration agreement.^[22] All parties, including the third party, must be given an opportunity to be heard.^[23]

Article 23 permits parties to agree the arbitral procedure, including by adopting the rules of an arbitral institution inside or outside the UAE.^[24] That allows parties to choose the ICC Rules. It does not remove the need to establish that the relevant party has agreed to arbitrate.

The drafting lesson is clear. A subcontract should not merely say that the subcontractor assumes the contractor’s obligations under the main contract. It should also address dispute resolution expressly. If the parties want a realistic prospect of joinder or consolidation, the main contract and subcontract arbitration clauses should be compatible from the outset.

Are FIDIC-based subcontracts enough?

FIDIC forms are widely used on UAE projects, often however with substantial amendments. They are helpful because they offer a familiar architecture for main contracts and subcontracts. The FIDIC Conditions of Subcontract for Construction 2011 contain provisions designed to align the subcontract with the main contract, including provisions on governing law and language, absence of privity with the employer, flow-down obligations and corresponding rights and remedies.^[25]

That alignment is commercially valuable, but it is not the same as multiparty arbitral consent. A subcontract can mirror notice requirements, claims machinery and technical obligations without allowing the employer to participate in a subcontract arbitration, or allowing the subcontractor to participate in the main contract arbitration.

This distinction is important when drafting Particular Conditions. The dispute resolution provisions should be reviewed as a system. Parties should consider whether the main contract and subcontract use the same institution, seat, language, governing law and number of arbitrators. They should also decide whether they want express consent to joinder, consolidation or concurrent proceedings, and whether any direct agreement with key subcontractors is needed.

What should parties do now?

The practical answer is to draft for the dispute before it arises. Employers should identify which subcontract packages are critical to programme, design integrity and long-term performance. Contractors should ensure that downstream dispute resolution provisions support upstream claim recovery. Subcontractors should avoid being bound in practice by upstream findings without adequate participation rights.

The main contract, subcontract and any collateral warranties or direct agreements should be reviewed together. The arbitration clauses should be compatible, not merely similar. The drafting should say expressly whether joinder and consolidation are permitted, whether consent is given in advance, and how related claims are to be managed.

Back-to-back drafting remains important. It aligns obligations and supports pass-through recovery. But in arbitration, back-to-back is not enough. For UAE construction projects under the 2026 ICC Rules, the decisive issue is not only whether obligations are mirrored. It is whether the parties have created a dispute resolution structure capable of dealing with the way disputes in a project will actually arise.

This article is for general information only and does not constitute legal advice. Independent legal advice should be sought in relation to any specific matter.

Endnotes

[1] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/dispute-resolution/dispute-resolution-services/arbitration/rules-procedure/2026-arbitration-rules/), Articles 8 to 11.

[2] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/dispute-resolution/dispute-resolution-services/arbitration/rules-procedure/2026-arbitration-rules/), Article 1(2).

[3] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011/download), promulgation Articles 2 and 3.

[4] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011), Article 812.

[5] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011), Article 813.

[6] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011/download), Article 832.

[7] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011/download), Article 832.

[8] UAE Government Legislation Portal, Federal Decree by Law No. (25) of 2025 Promulgating the Civil Transactions Law (https://uaelegislation.gov.ae/en/legislations/4011/download), Article 833.

[9] UAE Government Legislation Portal, Federal Law No. (5) of 1985 Concerning the Issuance of the Civil Transactions Law of the United Arab Emirates (https://uaelegislation.gov.ae/en/legislations/1025/download), Articles 890 and 891.

[10] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 8.

[11] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 9.

[12] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 10.

[13] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 11.

[14] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 8(1).

[15] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 8(6).

[16] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 8(6).

[17] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/wp-content/uploads/sites/3/2026/05/ICC_2026-Arbitration-Rules_2014-Mediation-Rules.pdf), Article 11.

[18] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/dispute-resolution/dispute-resolution-services/arbitration/rules-procedure/2026-arbitration-rules/), Article 24.

[19] International Chamber of Commerce, 2026 ICC Arbitration Rules (https://iccwbo.org/dispute-resolution/dispute-resolution-services/arbitration/rules-procedure/2026-arbitration-rules/), Article 25.

[20] UAE Government Legislation Portal, Federal Law No. (6) of 2018 Concerning Arbitration (https://uaelegislation.gov.ae/en/legislations/1069/download), Article 7.

[21] UAE Government Legislation Portal, Federal Law No. (6) of 2018 Concerning Arbitration (https://uaelegislation.gov.ae/en/legislations/1069/download), Article 7(2)(b).

[22] UAE Government Legislation Portal, Federal Law No. (6) of 2018 Concerning Arbitration (https://uaelegislation.gov.ae/en/legislations/1069/download), Article 22.

[23] UAE Government Legislation Portal, Federal Law No. (6) of 2018 Concerning Arbitration (https://uaelegislation.gov.ae/en/legislations/1069/download), Article 22.

[24] UAE Government Legislation Portal, Federal Law No. (6) of 2018 Concerning Arbitration (https://uaelegislation.gov.ae/en/legislations/1069/download), Article 23.

[25] Global Arbitration Review, “Subcontracts and multiparty arbitration in construction disputes” (https://globalarbitrationreview.com/guide/the-guide-construction-arbitration/sixth-edition/article/subcontracts-and-multiparty-arbitration-in-construction-disputes), discussing FIDIC Subcontract Conditions 2011, Clauses 1.8, 1.10, 2.2, 2.3 and 2.4.