Ahern v Aon Risk Services Australia Ltd

The case of Ahern v Aon Risk Services Australia Ltd was heard before the Supreme Court of Queensland, where the plaintiff sought to recover damages for professional negligence. Ahern, the plaintiff, alleged that Aon Risk Services Australia Ltd, the defendant, had negligently advised her in relation to her workers' compensation insurance. The primary dispute was whether Ahern had relied on the defendant's advice in her insurance application, a reliance which the defendant disputed.

The legal issue before the court was whether evidence could be admitted that rebutted the assertion that Ahern had relied on the defendant's advice. Ahern argued that such evidence was relevant and admissible as non-tendency evidence, as it would assist in determining the defendant's liability. The defendant contended that this evidence was inadmissible because it was merely a rebuttal to Ahern's assertion of reliance, which should be considered as a tendency or propensity.

The court held that the evidence was indeed relevant and admissible as non-tendency evidence. It reasoned that the evidence did not merely point to a tendency or propensity but rather addressed the specific assertion of reliance, thus assisting in resolving the factual dispute about whether reliance had occurred. This decision allowed the court to consider all relevant factors in determining whether the defendant's advice was negligent and whether that negligence led to Ahern's damages.

The court's decision provided clarity on the admissibility of rebuttal evidence in cases involving professional negligence claims. It allowed the court to fully evaluate the evidence in determining the merits of the plaintiff's claim. The final outcome of the case will depend on the resolution of the underlying factual disputes, including the issue of reliance, which now could be assessed with the benefit of all relevant evidence.