On December 12th, the British Columbia Court of Appeal adopted the following statement from North American Trust Co. v. Mercer International Inc. (1999) 1999 CanLII 4550 (BC SC), 71 B.C.L.R. (3d) 72 (S.C.) on the redaction of irrelevant or sensitive information from otherwise relevant documents:
Under the rules of this court, a litigant cannot avoid producing a document in its entirety simply because some parts of it may not be relevant. The whole of the document is producible if a part of it relates to a matter in question. But where what is clearly not relevant is by its nature such that there is good reason why it should not be disclosed, a litigant may be excused from having to make disclosure that will in no way serve to resolve the issues. In controlling its process, the court will not permit one party to take unfair advantage or to create undue embarrassment by requiring another to disclose part of a document that could cause considerable harm but serve no legitimate purpose in resolving the issues.
This same statement has been adopted as reflective of Ontario law by the Ontario Superior Court of Justice: see McGee v. London Life Insurance Company Limited, 2010 ONSC 1408 (CanLII).