Settlement Privilege

Union Carbide Canada Inc. v. Bombardier Inc., 2014 SCC 35 (CanLII)

[31] Settlement privilege is a common law rule of evidence that protects communications exchanged by parties as they try to settle a dispute. Sometimes called the “without prejudice” rule, it enables parties to participate in settlement negotiations without fear that information they disclose will be used against them in litigation. This promotes honest and frank discussions between the parties, which can make it easier to reach a settlement: “In the absence of such protection, few parties would initiate settlement negotiations for fear that any concession they would be prepared to offer could be used to their detriment if no settlement agreement was forthcoming” (A. W. Bryant, S. N. Lederman and M. K. Fuerst, The Law of Evidence in Canada (3rd ed. 2009), at para. 14.315).

[32] Encouraging settlements has been recognized as a priority in our overcrowded justice system, and settlement privilege has been adopted for that purpose. As Abella J. wrote in Sable Offshore, at para. 12, “[s]ettlement privilege promotes settlements.” She explained this as follows, at para. 13:

Settlement negotiations have long been protected by the common law rule that “without prejudice” communications made in the course of such negotiations are inadmissible (see David Vaver, “‘Without Prejudice’ Communications — Their Admissibility and Effect” (1974), 9 U.B.C. L. Rev. 85, at p. 88). The settlement privilege created by the “without prejudice” rule was based on the understanding that parties will be more likely to settle if they have confidence from the outset that their negotiations will not be disclosed. As Oliver L.J. of the English Court of Appeal explained in Cutts v. Head, [1984] 1 All E.R. 597, at p. 605:

. . . parties should be encouraged so far as possible to settle their disputes without resort to litigation and should not be discouraged by the knowledge that anything that is said in the course of such negotiations . . . may be used to their prejudice in the course of the proceedings. They should, as it was expressed by Clauson J in Scott Paper Co v. Drayton Paper Works Ltd (1927) 44 RPC 151 at 157, be encouraged freely and frankly to put their cards on the table.

What is said during negotiations, in other words, will be more open, and therefore more fruitful, if the parties know that it cannot be subsequently disclosed.