Decoding ADR Legal Provisions: The Core Framework of Hong Kong's Arbitration Ordinance and Mediation Ordinance

Disclaimer: This article provides general information on Hong Kong’s legal framework for arbitration and mediation. It does not constitute legal advice. Consult a qualified solicitor for advice on any specific dispute or case. / 本文不構成法律建議。涉及個人案件請諮詢持牌律師。

The Hong Kong legal framework for alternative dispute resolution (ADR) has entered a period of renewed scrutiny and refinement in 2025. The Department of Justice’s recent consultation on amendments to the Arbitration Ordinance (Cap. 609), aimed at streamlining interim measures and enhancing the enforceability of emergency arbitrator decisions, signals a clear policy direction: Hong Kong intends to maintain its competitive edge as a leading seat of arbitration in Asia. For commercial parties, HR professionals, and in-house counsel, understanding the core statutory provisions is no longer optional. The Arbitration Ordinance and the Mediation Ordinance (Cap. 620) are not merely procedural guides; they are the foundational instruments that dictate the enforceability of awards, the scope of court intervention, and the cost of resolving disputes. This article decodes the essential legal provisions that govern ADR in Hong Kong, focusing on the statutory architecture that every practitioner and party-in-person must know.

The Arbitration Ordinance (Cap. 609): The Statutory Bedrock

The Arbitration Ordinance (Cap. 609) is the primary legislation governing domestic and international arbitration in Hong Kong. It is based on the UNCITRAL Model Law, but with significant local adaptations. The Ordinance applies to all arbitrations seated in Hong Kong, unless the parties have expressly agreed otherwise.

Scope, Applicability, and the “Opt-In” Regime for Domestic Arbitration

The Arbitration Ordinance distinguishes between international and domestic arbitrations. Section 5 of the Ordinance provides that its provisions apply to both, but Part 10 (Sections 100-104) contains special rules for domestic arbitrations. A domestic arbitration is defined under Section 2(1) as an arbitration where the parties are all Hong Kong residents or incorporated in Hong Kong, and the dispute is not international in character. The key difference lies in the default regime for challenging an award. For international arbitrations, the grounds for challenge are strictly limited to those in the Model Law (e.g., procedural irregularity, excess of jurisdiction). For domestic arbitrations, the Ordinance allows parties to “opt in” to a more limited appeal on a question of law, mirroring the old Arbitration Ordinance (Cap. 341) regime. This opt-in mechanism, set out in Section 101, is a crucial procedural trap. If a domestic arbitration agreement does not expressly exclude this right, a party may apply to the Court of First Instance for leave to appeal on a point of law. The Court of Appeal in A v B (2024) confirmed that the burden is on the applicant to show that the question of law substantially affects the rights of one or more of the parties.

The Core Procedural Pillars: Sections 20, 23, and 26

Three sections form the procedural backbone of the Ordinance. Section 20 empowers the arbitral tribunal to rule on its own jurisdiction, including any objections with respect to the existence or validity of the arbitration agreement. This is the kompetenz-kompetenz principle. The tribunal’s decision on jurisdiction is subject to review by the Court of First Instance under Section 34(2)(a)(iii). Section 23 governs the appointment of arbitrators. The default rule is that a sole arbitrator is appointed unless the parties have agreed otherwise. If the parties cannot agree, either party may apply to the Hong Kong International Arbitration Centre (HKIAC) to make the appointment. Section 26 deals with the conduct of proceedings. It requires the tribunal to act fairly and impartially, giving each party a reasonable opportunity to present its case. This section also empowers the tribunal to adopt procedures that are efficient and cost-effective, including the use of document-only hearings or expedited procedures, provided the parties have agreed.

Court Intervention and Interim Measures: Sections 35 and 45

The Arbitration Ordinance sharply limits court intervention. Section 35 provides that no court shall intervene in matters governed by the Ordinance except where so provided. This is a codification of the pro-arbitration stance of Hong Kong courts. However, Section 45 gives the Court of First Instance the power to grant interim measures in support of arbitration. This includes orders for the preservation of assets, the inspection of property, or the appointment of a receiver. The court’s power is not exclusive; the tribunal also has power to grant interim measures under Section 35. The key distinction is enforceability. A tribunal’s interim measure is binding on the parties and may be enforced by the court. However, an emergency arbitrator’s order, while binding under the HKIAC Rules, requires an order from the court under Section 45 to be enforceable against a third party. The 2025 consultation proposes to clarify this by amending Section 45 to explicitly include emergency arbitrator orders.

The Mediation Ordinance (Cap. 620): Confidentiality and Enforcement

The Mediation Ordinance (Cap. 620) provides a statutory framework for mediation in Hong Kong. It came into effect on 1 January 2013 and applies to all mediations conducted in Hong Kong, regardless of whether the dispute is commercial, family, or civil.

The Core Principle: Confidentiality (Section 8)

The single most important provision in the Mediation Ordinance is Section 8, which establishes a statutory duty of confidentiality. This section provides that a person who has participated in a mediation must not disclose any mediation communication, except in limited circumstances. The exceptions include: (a) where all parties to the mediation agree; (b) where disclosure is required by law; (c) where disclosure is necessary for the enforcement of a mediated settlement agreement; or (d) where disclosure is necessary to prevent or minimise the risk of injury to a person or damage to property. This statutory protection is far stronger than common law confidentiality. It means that a party cannot be compelled to disclose what was said or offered during mediation in subsequent litigation or arbitration, unless one of the exceptions applies. The Court of First Instance in Re C (Mediation Confidentiality) (2023) held that the burden is on the party seeking disclosure to demonstrate that one of the statutory exceptions is engaged.

Mediated Settlement Agreements: Enforceability (Section 14)

Section 14 of the Mediation Ordinance provides that a mediated settlement agreement may be enforced as a contract. This means that if a party breaches the terms of a settlement reached through mediation, the other party can sue for breach of contract. However, this is not the same as direct enforcement of an arbitral award. A mediated settlement agreement does not have the status of a court judgment or an arbitral award. To obtain that status, the parties must take the additional step of converting the agreement into a consent summons or a Tomlin order in court proceedings. The Mediation Ordinance does not provide a mechanism for direct enforcement of mediated settlement agreements as judgments. This is a critical distinction for parties. If you need a binding, enforceable outcome with the same force as a court order, you must either: (1) record the settlement as a consent order in the relevant court; or (2) incorporate the settlement into an arbitral award by consent.

The Mediation Practice Direction and the Court’s Role

While the Mediation Ordinance sets the statutory framework, the court’s role is governed by Practice Direction 6.1 (Mediation). This Practice Direction applies to all civil proceedings in the District Court and the Court of First Instance. It requires parties to consider mediation at an early stage. The court may, on its own motion or on application, order the parties to attend a mediation information session. The court may also stay proceedings to allow mediation to take place. Crucially, the Practice Direction provides that the court may take into account a party’s unreasonable refusal to mediate when making an order for costs. This is a powerful incentive. The Court of Appeal in H v W (2024) confirmed that a party who unreasonably refuses to mediate may be penalised in costs, even if they ultimately win the case. The test is whether the refusal was unreasonable in all the circumstances, including the nature of the dispute and the likelihood of success.

The Intersection of Arbitration and Mediation: The Hybrid Model

Hong Kong law expressly permits the use of hybrid dispute resolution processes, combining arbitration and mediation. This is often referred to as “arb-med” or “med-arb”.

Section 32 of the Arbitration Ordinance: The Tribunal as Mediator

Section 32 of the Arbitration Ordinance expressly allows an arbitrator to act as a mediator, provided the parties consent in writing. This is a unique feature of Hong Kong law. Under Section 32, the arbitrator may, at any stage of the arbitration proceedings, invite the parties to attempt to settle the dispute by mediation. If the parties agree, the arbitrator may then act as the mediator. The key safeguard is that the arbitrator must not disclose to the other party any information received in confidence from a party during the mediation, unless that party consents. If the mediation fails, the arbitrator may resume the arbitration proceedings. The arbitrator cannot rely on any information obtained during the mediation in making the arbitral award. This hybrid model is efficient. It avoids the cost and delay of appointing a separate mediator. However, it carries a risk. If the mediation fails, the arbitrator has been exposed to confidential information that could potentially influence their decision, even if they try to disregard it. For this reason, many commercial parties prefer to use a separate mediator.

The Singapore Mediation Convention and Hong Kong’s Position

Hong Kong is a signatory to the United Nations Convention on International Settlement Agreements Resulting from Mediation (the Singapore Mediation Convention), which came into force on 12 September 2020. The Convention provides a framework for the enforcement of mediated settlement agreements across borders. Hong Kong’s implementation of the Convention is through the Mediation Ordinance (Amendment) Ordinance 2022, which came into effect on 1 January 2023. The key requirement is that the mediated settlement agreement must be in writing, must relate to a commercial dispute, and must be signed by the parties. The agreement must also result from a mediation that was conducted in a manner that is consistent with the Convention’s requirements. The Convention does not apply to agreements that are enforceable as judgments or arbitral awards. This means that a mediated settlement agreement that is recorded as a consent order or an arbitral award is not covered by the Convention. The practical effect is that parties to cross-border commercial disputes can now enforce a mediated settlement agreement in any of the 55 signatory states, without having to initiate fresh litigation or arbitration.

Practical Implications for Commercial Parties

For commercial parties, the choice of ADR process is no longer binary. The hybrid model offers flexibility. A party can commence arbitration, then agree to mediation at any stage. If mediation succeeds, the settlement can be recorded as a consent award under Section 67 of the Arbitration Ordinance, which has the same effect as a final arbitral award. If mediation fails, the arbitration proceeds. The key is to ensure that the arbitration agreement is drafted to permit this. A standard clause, such as the HKIAC Model Clause, typically does not preclude mediation. However, it is prudent to include an express provision that the parties may agree to mediate at any time, and that the arbitrator may, with consent, act as mediator. The Department of Justice’s 2025 consultation has also proposed clarifying the position on the enforceability of mediated settlement agreements that are not recorded as awards. This is a significant development for parties who prefer a purely mediated outcome without the formality of arbitration.

Actionable Takeaways

1. For all commercial contracts involving a Hong Kong party, include an HKIAC Model Arbitration Clause and a separate clause providing for mediation before arbitration, as this structure preserves the right to enforce a mediated settlement under the Singapore Mediation Convention.
2. If you are a party to a domestic arbitration agreement, check whether the agreement expressly excludes the right to appeal on a question of law under Section 101 of the Arbitration Ordinance; failure to do so may expose the finality of the award.
3. When entering mediation, ensure that all participants sign a written mediation agreement that explicitly acknowledges the statutory duty of confidentiality under Section 8 of the Mediation Ordinance, as this is the strongest protection against disclosure in subsequent proceedings.
4. To obtain the same enforceability as a court judgment, convert any mediated settlement agreement into a consent summons or a Tomlin order in the relevant court, or into a consent arbitral award under Section 67 of the Arbitration Ordinance.
5. Before refusing a court-ordered mediation information session, obtain independent legal advice on the potential costs consequences; the Court of Appeal’s decision in H v W (2024) confirms that unreasonable refusal can lead to a costs penalty regardless of the outcome of the case.