Improper Tribunal Composition and Due Process Objections Under the New York Convention in Turkiye

A party resisting enforcement of a foreign arbitral award in Türkiye may argue that the arbitral authority or the tribunal's composition did not match what the parties agreed, or that it was otherwise not in accordance with the law of the country where the arbitration took place, and may separately argue that it was not given proper notice of the appointment of an arbitrator or of the arbitral proceedings, or was otherwise unable to present its case. Either ground, if established, can defeat enforcement without any examination of the award's substance.

Arbitration derives its legitimacy from the parties' agreement on how the process will be conducted, including how the tribunal is formed and how the proceedings are run. Where the actual process departs materially from what was agreed, or from the mandatory procedural law applicable to the arbitration, or where a party was effectively shut out of meaningful participation, the resulting award loses the procedural legitimacy that justifies enforcing it in Türkiye.

Article V(1) of the New York Convention sets out several related grounds for refusal, including that the composition of the arbitral authority or the arbitral procedure was not in accordance with the agreement of the parties or, failing such agreement, with the law of the country where the arbitration took place, and that the party against whom the award is invoked was not given proper notice of the appointment of the arbitrator or of the arbitration proceedings, or was otherwise unable to present its case. Articles 60 to 63 of Law No. 5718 on Private International Law and International Civil Procedure (MOHUK) apply this same framework to enforcement proceedings in Türkiye.

Turkish courts examining these objections look closely at the arbitration agreement and the applicable institutional or procedural rules to determine whether the tribunal was formed as agreed, and whether notice of key procedural steps, including appointment of arbitrators and scheduling of hearings, genuinely reached the objecting party in a manner that allowed effective participation. Minor or purely technical departures from agreed procedure that did not affect the party's ability to participate have generally not been treated as sufficient to defeat enforcement, whereas a genuine failure to constitute the tribunal as agreed, or a real denial of the opportunity to be heard, has been treated seriously.

There is discussion about how significant a procedural departure must be before it rises to the level required to refuse enforcement, since not every deviation from the parties' agreed procedure will have affected the outcome or the fairness of the process. Commentators generally favour an approach that asks whether the departure had a real, practical effect on the objecting party's ability to participate meaningfully, rather than treating any technical irregularity as automatically fatal to the award.

A party raising this objection should identify precisely how the tribunal's composition or the procedure followed departed from the parties' agreement or from the applicable procedural law, and should demonstrate, with concrete facts, how this departure affected its ability to participate or present its case, rather than relying on general or technical complaints about the process.

The objection is raised within the enforcement proceedings themselves, following the general procedural deadlines for submitting a defence under Turkish civil procedure, and a party aware of a procedural irregularity during the arbitration itself should generally raise it at that stage as well, since a failure to object when the issue first arose can affect how the objection is later viewed.

The competent Turkish civil court of first instance handling the enforcement action examines these objections as part of its review of the statutory grounds for refusal under the New York Convention framework as applied through Turkish law.

Relevant material includes the arbitration agreement and any applicable institutional rules, the procedural record of the arbitration showing how the tribunal was constituted and how notice was given, and evidence demonstrating the practical effect of any alleged departure on the objecting party's ability to participate.

Parties sometimes raise minor, technical procedural complaints without showing any real impact on their ability to participate, which Turkish courts are unlikely to find sufficient. Others fail to raise a known procedural irregularity during the arbitration itself, then attempt to rely on it for the first time at the enforcement stage, which can weaken the objection considerably. Confusing this ground with a general public policy objection, rather than the more specific procedural grounds under Article V(1), is another recurring error.

A party with concerns about how a tribunal was constituted or how the arbitral process was conducted should raise those concerns during the arbitration whenever possible, and should be ready, at the enforcement stage, to show concretely how any departure from the agreed procedure affected its ability to participate, since general or belated complaints rarely succeed before a Turkish court.