Despite the difference in wording in the rules under consideration in AON Risk Services Australia Limited v ANU,[7] the following principles can be drawn from the decision.
The reference to "the real question in controversy" in r 36.01 refers to the real question in controversy that exists at the time of the application to amend.[8] It does not encompass a new claim or issue although it arises out of the same general matter being litigated. An unduly narrow approach should not be taken to what are the real issues in controversy.[9] They may extend beyond the existing pleadings.[10] In Etna v Arif,[11] Batt JA (with whom Charles and Callaway JJA agreed) said that r 36.01(1) should "be read, and as, in substance, comprehending questions potentially within the ambit of the controversy or lis between the parties."[12]
A distinction should be drawn between those circumstances where the rules mandate that an amendment should be allowed and those where a discretion is granted to the court. Section 29(2) of the Supreme Court Act 1986 and r 1.14 (1)(a) are expressed in mandatory terms even though the power to allow an amendment under r 36.01 is expressed in discretionary terms.[13]
Where the court has a discretion to amend, the discretion is not at large but the objectives in r 1.14 should be sought to be achieved through the exercise of the discretion.[14] Similarly, s 29(2) of the Supreme Court Act 1986 also guides the court in the exercise of its discretion.
The High Court in AON Risk Services Australia Limited v ANU[15] also accepted that issues of case management were relevant to the exercise of the discretion to allow an amendment. The court said that case management involved an acceptance "that the conduct of litigation is not merely a matter for the parties but is also one for the court and the need to avoid disruptions in the court's lists with consequent inconvenience to the court and prejudice to the interests of other litigants waiting to be heard..."[16]
The court also accepted "that justice cannot always be measured in money and that the court is entitled to weigh in the balance the strain the litigation imposes upon litigants..."[17] In so doing, they rejected the notion that an award of costs is a complete panacea for any delay or disruption caused by an amendment.[18]
The court confirmed that the onus is on the party seeking the amendment and that "generally speaking, where a discretion is sought to be exercised in favour of one party, and to the disadvantage of another , an explanation will be called for."[19]
The ACT rules include the objective of achieving a "just resolution of the real issues in civil proceedings." Although those words are not found in the Victorian equivalent, in my opinion, the same principle applies under our rules.
As mentioned above, the court's powers under r 36.01 are expressed to be discretionary. On the other hand, s 29(2) of the Act and r 1.14(1)(a) are expressed in mandatory terms. In my opinion, the direction to the court that it must exercise its jurisdiction in every proceeding before it so as to secure that, as far as possible, all matters in dispute between the parties are completely and finally determined and that all multiplicity of proceedings concerning any of those matters is avoided, requires the discretion in r 36.01 to be exercised accordingly. The mandatory direction in r 1.14 (1)(a) also governs the exercise of the discretion in a similar fashion.