O'Brien v Doherty & Ors (No 2)

In the case of O'Brien v Doherty & Ors (No 2), the parties were O'Brien, the plaintiff, and Doherty and others, the defendants. The dispute involved an assessment of costs following a legal proceeding in which the plaintiff sought damages for injuries sustained in a motor vehicle accident. The High Court of Australia was the tribunal that reviewed the case. The primary issue before the court was the assessment of costs between the parties and whether the court could substitute its decision for that of the Assessor.

The court was required to determine whether the principles governing costs assessments in legal proceedings permitted the substitution of the court's decision for that of the Assessor. The plaintiff argued that the Assessor's decision was flawed and that the court should not be bound by it. The defendants contended that the court should defer to the Assessor's expertise and not substitute its own decision unless there was a clear error of law. The court had to balance the deference owed to the Assessor's professional judgment with the need to ensure fairness and correctness in the costs assessment.

The court held that while the Assessor's decision carried weight, the court was not bound by it and could substitute its own decision if it was satisfied that the Assessor had erred. The court found that the Assessor had indeed made an error in the costs assessment, leading to an unjust outcome. Consequently, the court exercised its discretion to substitute its own decision and made a nil assessment of costs against the plaintiff. The court emphasised that this power should be exercised sparingly and only in cases where the court was satisfied of an error by the Assessor. The final orders of the court directed that the costs be assessed as nil in favour of the plaintiff.