Esso Australia Ltd v Australian Health Insurance Association Limited

The applicant, Esso Australia Ltd, sought special leave to appeal to the High Court of Australia from a decision concerning its employee health benefits plan. The dispute arose because the Australian Health Insurance Association Limited (AHIA) sought to prevent Esso from operating its plan, arguing it was unlawful as Esso was not a registered health insurance organisation under section 67 of the *National Health Act*. Esso's plan provided coverage for employees' hospital and medical expenses, subject to a nominal employee contribution and a deductible, with Esso bearing the majority of the costs.

The central legal issue before the High Court was whether Esso's self-funded employee health plan, where employee contributions were token and did not reflect the true cost of the plan, was intended to be prohibited by section 67 of the *National Health Act*. Esso contended that the Act, particularly in light of the second reading speech for the relevant amendments, was not intended to affect employers who self-insured or self-financed their employees' health costs. AHIA argued that Esso's conduct was unlawful because it was operating as an unregistered health insurer.

Esso submitted that the *National Health Act* disclosed two primary policies: the introduction of "community rating" and the prevention of insurers selecting low-risk individuals. Esso argued that the community rating principle, which requires insurers to offer insurance without regard to age or health status, had no application to its plan as it was open to all employees, their dependants, and offered sufficient flow-on periods for those leaving employment. Therefore, Esso contended that prohibiting its plan would not advance the policy objectives of the Act.