Evidence in Arbitration

2.4.1 Evidence Framework in Arbitration

Unlike court proceedings bound by the Indian Evidence Act, arbitration offers flexibility in evidence management. Section 19(4) empowers the tribunal to determine admissibility, relevance, materiality, and weight of evidence. This flexibility is both an advantage and a responsibility.

Key Differences from Court Proceedings

2.4.2 Documentary Evidence and Production

Categories of Documents

• Contemporaneous Documents: Contracts, emails, letters, meeting minutes created during relevant events
• Technical Documents: Drawings, specifications, reports, test results
• Financial Documents: Invoices, payment records, accounts, audit reports
• Correspondence: Without prejudice communications (protected), open correspondence

Document Production Process

1. Voluntary Disclosure: Each party produces documents it relies upon with pleadings
2. Request to Produce: Party requests specific documents from opponent
3. Tribunal Order: If disputed, tribunal decides on production
4. Adverse Inference: Non-production may lead to adverse inference

IBA Rules on Taking of Evidence

Many arbitrations adopt or reference the IBA Rules on the Taking of Evidence, which provide:

• Redfern Schedule format for document requests
• Narrow and specific request requirements
• Objection grounds (privilege, confidentiality, unreasonable burden)
• Production deadlines and procedures

2.4.3 Witness Evidence

Types of Witnesses

• Fact Witnesses: Persons with direct knowledge of relevant events
• Expert Witnesses: Persons providing opinion evidence on technical matters
• Corporate Representatives: Employees testifying on behalf of corporate parties

Witness Statement Practice

International arbitration typically uses written witness statements:

1. Witness statement filed in advance (typically with pleadings or separate round)
2. Statement stands as examination-in-chief
3. Cross-examination at hearing
4. Re-examination (limited to matters arising in cross)
5. Tribunal questions

Section 27 - Court Assistance in Taking Evidence

The tribunal or a party (with tribunal approval) may apply to court for assistance in taking evidence from witnesses who refuse to appear or produce documents.

2.4.4 Expert Evidence

Section 26 - Tribunal-Appointed Experts

Unless parties agree otherwise, the tribunal may:

• Appoint one or more experts to report on specific issues
• Require parties to provide information or access to the expert
• Require expert to participate in oral hearing for questioning

Party-Appointed Experts

More common in practice - each party appoints its own expert who provides:

• Expert report setting out opinions and basis
• Response to opposing expert's report
• Oral testimony and cross-examination

Hot-Tubbing (Concurrent Expert Evidence)

A modern technique where experts from both sides appear together and:

• Discuss issues in dialogue format
• Identify areas of agreement and disagreement
• Respond to each other's points in real-time
• Answer tribunal's questions together

2.4.5 Privilege and Confidentiality

Types of Privilege

• Legal Professional Privilege: Communications between lawyer and client for legal advice
• Litigation Privilege: Documents created for purpose of litigation/arbitration
• Without Prejudice Privilege: Settlement communications
• Self-Incrimination: Protection against self-incriminating evidence

Privilege Challenges in International Arbitration

Different jurisdictions have different privilege rules. The tribunal must determine which privilege law applies - often the law of the seat, but may consider the law governing the relationship between lawyer and client.