Department for Health and Ageing v Li

This matter concerned an appeal by the Department for Health and Ageing against a decision of the Full Bench of the Supreme Court of South Australia, which had upheld a worker's compensation claim made by Ms Li. The dispute centred on whether Ms Li's mental illness was compensable under the Workers Rehabilitation and Compensation Act 1986 (SA), specifically concerning the interpretation of section 30A of that Act.

The primary legal issues before the court were the proper construction of section 30A of the Act, particularly the requirement for employment to be a "substantial cause" of the injury, and how this interacted with the exclusion for injuries predominantly caused by reasonable administrative action. The court also considered whether the Deputy President's original decision and the Full Bench's subsequent decision adequately addressed these legal requirements and the factual findings necessary to determine Ms Li's claim.

The court reasoned that both the Deputy President and the Full Bench had erred in their construction of section 30A. The Chief Justice held that for an employment cause, other than reasonable administrative action, to qualify for compensation, it must be a substantial cause of the injury. If such a substantial employment cause exists, then section 30A(b) only precludes compensation if reasonable administrative action was the predominant cause of the mental illness when considered alongside all other employment and non-employment causes. The court found that the Deputy President had failed to make a factual finding on whether there was a substantial employment cause of Ms Li's condition due to an erroneous interpretation of the section.

Consequently, the Full Bench's decision to uphold Ms Li's claim without a finding that her employment, apart from reasonable administrative action, was a substantial cause of her illness was also deemed incorrect. The court allowed the appeal, ordering that Ms Li's matter be remitted for a rehearing to determine the factual question of whether her employment was a substantial cause of her mental condition.