Moore-McQuillan v WorkCover Corporation

The High Court of Australia heard an appeal concerning a dispute between Mr. Moore-McQuillan and the WorkCover Corporation of South Australia. The core of the disagreement revolved around the assessment of Mr. Moore-McQuillan's permanent impairment for the purposes of a workers' compensation claim.

The central legal issue before the High Court was whether the assessment of Mr. Moore-McQuillan's permanent impairment, conducted by a medical assessor appointed by WorkCover, was vitiated by an error of law. Specifically, the court had to determine if the medical assessor had failed to properly consider all relevant medical evidence and statutory criteria when reaching their conclusion regarding the degree of permanent impairment.

The High Court found that the medical assessor had indeed made an error of law. Their Honours reasoned that the assessor had failed to adequately address the specific requirements of the relevant legislation, which mandated a comprehensive consideration of all available medical evidence and the application of established assessment guidelines. The court emphasised that a proper assessment requires more than a superficial review; it necessitates a thorough and reasoned evaluation of the evidence in light of the statutory framework.

Consequently, the High Court allowed the appeal, setting aside the decision of the lower court and remitting the matter back to the South Australian Employment Tribunal for a redetermination of Mr. Moore-McQuillan's permanent impairment assessment in accordance with the law.