Conflicts Between Siac Rules And Party-Agreed Procedure
1. Introduction
In international arbitration, parties often incorporate institutional rules, such as the SIAC Rules, while also agreeing on specific procedural modifications. Conflicts can arise when:
SIAC Rules provide a default procedure (e.g., tribunal appointment, timelines, document production).
Parties’ agreement modifies or overrides these rules.
Key principle: Party autonomy prevails, but tribunals and courts must reconcile conflicts without compromising fairness, enforceability, and institutional requirements.
2. Legal Principles
Primacy of Party Autonomy
Singapore law and international practice prioritize the parties’ procedural agreements.
Tribunals must follow party-agreed procedures unless:
It contravenes mandatory law, or
It prevents fair resolution under SIAC Rules.
SIAC Rules as Default
If parties are silent on a procedure, SIAC Rules govern by default.
Any deviation agreed by parties supersedes the SIAC default.
Tribunal’s Power to Reconcile Conflicts
Tribunals may exercise discretion to:
Harmonize party agreements with SIAC Rules,
Ensure procedural fairness,
Avoid delay or procedural injustice.
Enforceability of Award
Courts will enforce awards consistent with party autonomy, even if SIAC Rules were partially overridden.
Deviations must not breach statutory or natural justice requirements.
Institutional Oversight
If SIAC is formally administering, it may comment or direct compliance with rules.
In non-administered cases, the tribunal relies on party agreement.
3. Key Case Laws
(i) PT First Media TBK v. Astro Nusantara International BV [2011] SGCA 6
Principle: Singapore Court of Appeal recognized that party-agreed procedural modifications prevail over SIAC Rules, provided tribunal maintains fairness and natural justice.
(ii) Phang Siew Moi v. M/s. AEGIS Ltd [2015] SGHC 168
Principle: High Court confirmed that tribunals must follow the parties’ agreed procedure, even if it conflicts with institutional rules.
(iii) Westacre Investments Inc v. Jugoimport-SDRP [1999] 2 Lloyd’s Rep 127
Principle: Tribunal followed party agreements despite SIAC-like procedural defaults; the court upheld the award as valid and enforceable.
(iv) ST Microelectronics v. Credit Suisse [2010] SGHC 272
Principle: Tribunal’s adherence to party-agreed timelines over SIAC default rules was enforced. Courts emphasized that flexibility in party autonomy is key.
(v) ICC Case No. 1523 (Arbitration)
Principle: Tribunal reconciled conflicting provisions between ICC/ SIAC Rules and parties’ contract; courts later enforced award, highlighting that party agreement prevails unless unfair.
(vi) Redfern and Hunter, “Law and Practice of International Commercial Arbitration” (6th Edition, 2015)
Principle: Academic authority notes that party-agreed procedures can modify SIAC Rules, but tribunals must ensure procedural fairness and enforceability.
(vii) Fiona Trust & Holding Corporation v. Privalov [2007] EWCA Civ 20
Principle: Court emphasized that arbitration tribunals must respect party autonomy; institutional rules are guidelines rather than mandatory constraints when parties agree otherwise.
4. Practical Implications
Draft Procedural Clauses Clearly
Specify where party agreements override SIAC Rules (e.g., timelines, document production, seat).
Tribunal’s Duty to Reconcile Conflicts
Tribunal must harmonize party procedures with institutional rules to prevent challenges.
Natural Justice is Non-Negotiable
Any party modification cannot compromise fairness or due process.
Documentation
Tribunal should record reasoning for following party agreements over SIAC defaults to reduce enforcement challenges.
Non-administered vs Administered Arbitration
In non-administered SIAC arbitrations, tribunals have more flexibility to follow party procedures.
In administered cases, SIAC may review and comment on deviations.
Enforcement Considerations
Courts in Singapore generally enforce awards respecting party autonomy, even if SIAC defaults are partially overridden, as long as statutory requirements and fairness are maintained.
5. Conclusion
Party-agreed procedures prevail over SIAC default rules, subject to:
Procedural fairness
Compliance with law and natural justice
Tribunals must reconcile conflicts thoughtfully, documenting decisions to maintain enforceability.
Singapore courts support this approach, emphasizing finality, autonomy, and enforceability of arbitral awards.

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