Before any hearing, the Arbitral Tribunal may require any party to give notice of the identity of each witness that party wishes to call (including rebuttal witnesses), as well as the subject matter of that witness’s testimony, its content and its relevance to the issues in the arbitration.
The Arbitral Tribunal may also determine the time, manner and form in which such materials should be exchanged between the parties and presented to the Arbitral Tribunal; and it has a discretion to allow, refuse, or limit the appearance of witnesses (whether witness of fact or expert witness).
Subject to any order otherwise by the Arbitral Tribunal, the testimony of a witness may be presented by a party in written form, either as a signed statement or as a sworn affidavit.
Subject to Article 14.1 and 14.2, any party may request that a witness, on whose testimony another party seeks to rely, should attend for oral questioning at a hearing before the Arbitral Tribunal. If the Arbitral Tribunal orders that other party to produce the witness and the witness fails to attend the oral hearing without good cause, the Arbitral Tribunal may place such weight on the written testimony (or exclude the same altogether) as it considers appropriate in the circumstances of the case.
Any witness who gives oral evidence at a hearing before the Arbitral Tribunal may be questioned by each of the parties under the control of the Arbitral Tribunal. The Arbitral Tribunal may put questions at any stage of his evidence.
Subject to the mandatory provisions of any applicable law, it shall not be improper for any party or its legal representatives to interview any witness or potential witness for the purpose of presenting his testimony in written form or producing him as an oral witness.
Any individual intending to testify to the Arbitral Tribunal on any issue of fact or expertise shall be treated as a witness under these Rules notwithstanding that the individual is a party to the arbitration or was or is an officer, employee or shareholder of any party.