AAI Limited trading as AAMI v Boga

AAI Limited trading as AAMI sought judicial review of a decision by the Motor Accident Authority of New South Wales (MAA) to assess the permanent impairment of a claimant under the Motor Accidents Compensation Act 1999 (NSW). The claimant had been assessed by a medical assessor, who determined a 12% degree of permanent impairment. The Authority subsequently rejected the claimant's application for an internal review and dismissed his appeal. The central issue was whether there was a reviewable error of law in the Authority's decision.

The court examined whether the assessor's failure to provide reasons constituted a jurisdictional error. It considered the "Nguyen principle," which holds that such a failure might be a jurisdictional error if the assessment was made in accordance with guidelines that required reasons to be given. The court found that the assessor was not bound by the guidelines to provide reasons and thus, the failure to do so was not a jurisdictional error. Additionally, the court held that the assessor was not required to raise inconsistencies observed in earlier medico-legal reports if they did not consider them inconsistent. The court found that the assessor's observations were reasonable, and therefore, the claimant's argument regarding procedural fairness failed.

The court determined that the Authority had not made an error of law in rejecting the claimant's application for an internal review and dismissing his appeal. The court also considered whether the Authority applied the incorrect statutory test, but found that the Authority had correctly applied the relevant statutory provisions. The court further addressed the issue of the extension of time, holding that the Authority had the discretion to extend time and had exercised it appropriately. Consequently, the court dismissed the application for judicial review.