17 In my view, the structure of the WIMWC Act, the terms of section 327 and the decisions of this Court interpreting the relevant provisions militate against the proposition that the Registrar exercises judicial power under s 327. Whatever the merits of the submission that the medical assessment process is capable of directly affecting common law rights (as to which, see par 29 below), that is a function of the MAP. The Registrar plays no role in that process, beyond removing the barrier to an appeal, or in effect, granting leave to appeal. There is no appeal from the Registrar's decision under the Act.
18 In Campbelltown City Council v Vegan [2004] NSWSC 1129, Wood CJ at CL reviewed the statutory framework of the Act ([22]-[23]) and the principles applicable to judicial review of administrative decisions ([37] - [45]). Vegan was only concerned with the sufficiency of reasons provided by the MAP and it appears to have been accepted that the MAP's role was administrative. However, Wood CJ at CL accepted the submission there advanced that the proper construction of s 327 assigns to the Registrar the role of "gatekeeper" whose task is to consider whether at least one of the grounds specified in s 327(3) exists, and "if it appears to the Registrar that this is the case", then the appeal proceeds. His Honour remarked that this construction is "consistent with the legislative policy of placing a tight control on appeals, and of confining the grounds for them." [76]
19 Since Vegan, a number of decisions of this Court have considered s 327 of the Act and the role of the Registrar. In Riverina Wines Pty Ltd v Registrar of the Workers Compensation Commission of NSW & Ors. [2005] NSWSC 1260, Hislop J followed Vegan and Wikaira v Registrar of the Workers Compensation Commission of NSW [2005] NSWSC 954 in holding that the application under s 327 is in the nature of an application for leave to appeal. Relevantly, Assoc. Justice Malpass in the latter case rejected a submission that the Registrar's power under s 327 was a discretionary one, and that the Registrar was required to determine whether or not it appeared that there was an arguable specified ground of appeal. It was sufficient if the Registrar determined that a ground of appeal existed. In Estate of Heinrich Christian Joseph Brockmann v Brockmann Metal Roofing Pty Ltd & Ors. [2006] NSWSC 235, Studdert J reviewed these decisions in the course of rejecting the plaintiff's argument that there was no available basis for the Registrar to have found a ground of appeal (a submission advanced by the plaintiff in the present case). Studdert J placed particular emphasis on the subjective language of s 327(4), that is, "unless it appears to the Registrar". This construction was intended to discourage appellate review. Moreover, even if the Registrar is wrong in concluding that there is an available ground of appeal, that does not invalidate the appeal.
20 The fact that the Commission is not a court does not determine whether the Registrar exercises judicial power ; Orellana-Fuentes v Standard Knitting Mills Pty Ltd & Anor. ; Carey v Blasdom Pty Ltd T/As Ascot Freightlines (2003) 57 NSWLR 282 at 290 ; [2003] NSWCA 146 at [39]. However, in carrying out the function envisaged by s 327, the Registrar is not engaged in "an inquiry concerning the law as it is and the facts as they are, followed by an application of the law as determined to the facts as determined" ; R v Trade Practices Tribunal ; Ex Parte Tasmanian Breweries Pty Ltd (1970) 123 CLR 361 at 374 per Kitto J. This description of the exercise of judicial power was cited with approval in Bass v Permanent Trustee Co. Ltd. [1999] HCA 9 at [45]. Nor does the Registrar play any role when exercising power under s 327 in determining the legal rights and duties of parties ; Attorney General of NSW & Anor. v Kennedy Miller Television Pty Ltd. (1998) 43 NSWLR 729 per Handley JA at 739.
21 It remains to consider whether there are special or exceptional circumstances in this case that impose upon the Registrar an obligation to give reasons in conformity with the requirements of procedural fairness. Such an obligation has been held to arise where the statutory scheme in question provides for an appeal on a matter of law and leave to appeal generally ; Attorney General of NSW & Anor. v Kennedy Miller Television Pty Ltd. That is not the case here. Not only is there no appeal from the Registrar's decision, but the unqualified right to a re-hearing de novo before the MAP renders the reasons for the Registrar's decision immaterial ; Vegan at [80] ; Passey v The Registrar of the Workers Compensation Commission of NSW [2005] NSWSC 1032.