Background
NRT sued MGN over an upgrade to a facility operated by NRT. MGN had separately engaged ACG to design the upgrade, and ACG was later joined to NRT’s proceeding. MGN and ACG were also parties to a separate ACICA arbitration concerning the project, to which NRT was not a party.
Witness statements and expert reports used in that arbitration were confidential, but could contain material directly relevant to issues in NRT’s court proceeding. MGN disclosed three arbitration witness statements in heavily redacted form, contending that an agreed document management plan permitted redaction of irrelevant confidential material. ACG proposed to take the same approach for its arbitration witness statements and expert reports. NRT sought orders requiring unredacted disclosure.
The Court’s Holding
McCafferty J held that the document management plan did not prevent NRT from challenging MGN’s redactions. Although the plan contemplated redaction where appropriate, it preserved objections and did not authorise unchallengeable unilateral decisions about relevance and confidentiality.
The Court held that, under the UCPR, a party ordinarily must disclose the whole of a document if any part is directly relevant. Redaction for irrelevance is not ordinarily undertaken unilaterally; it requires consent or court relief, supported by a proper basis. The defendants had not established that the extensive actual and proposed redactions would not impair the documents’ meaning or context. Arbitration confidentiality alone did not justify withholding the material, particularly where no trade-secret or specific commercially sensitive content was identified.
The Court ordered MGN to disclose its three relied-on arbitration witness statements unredacted, and ACG to disclose directly relevant relied-on arbitration witness statements and expert reports unredacted. Access was subject to a written confidentiality undertaking, and the application materials and reasons were restricted pending proposed redaction or anonymisation for publication.
Key Takeaways
- A document management plan allowing redaction does not, without clear language, prevent a party from challenging whether a redaction is appropriate.
- Where a document is disclosable, irrelevance alone generally does not permit unilateral redaction of other parts of it.
- Confidentiality arising solely from arbitration will not ordinarily defeat disclosure required in related litigation; tailored confidentiality undertakings can protect the arbitral process.
Why It Matters
The decision emphasises the risks of heavy relevance-based redactions in documents arising from parallel arbitrations. Assessments of relevance can reasonably differ, and extensive masking may remove context needed to understand material that is admittedly relevant.
For parties litigating alongside confidential arbitrations, the case supports using protective conditions rather than broad unilateral redactions. It also confirms that courts may balance arbitral confidentiality with the opposing party’s need for effective disclosure.