By an amended notice of appeal, EMI has contended, in grounds | and 2, that
the District Court had no jurisdiction to go behind the premium determined by
EMI and said to be in accordance with premium determination required by the
Workers Compensation Act 1987 and regulations thereunder, which
determination was confirmed by WorkCover. The contention was that there was
a statutory scheme for the determination of workers' compensation premium, and
that the scheme gave a right of review to a dissatisfied employer to the
WorkCover Authority. It was further contended that although, perhaps, the
review by the WorkCover Authority might be further reviewed either in the
Workers Compensation Court or by way of administrative proceedings in the
Supreme Court pursuant to s69 of the Supreme Court Act (both being matters
upon which I make no comment), the District Court did not have jurisdiction
itself to redetermine the appropriate basis for the claim reserve or the
consequential calculation of the workers' compensation premium. Accordingly
whether the defence, or set-off, were based upon error in assessment of premium
upon arguments analogous with error in valuation cases, breach of a duty of care
said to be owed by EMI to Donald to take care in calculation of premium, breach
of a supposed duty to act fairly imposed upon EMI towards Donald grounded on
concepts discussed in Renard.Constructions (M E) Pty Ltd v The Minister for
Public Works,> or upon equitable principles of set-off or unjust enrichment, the
District Court was not permitted to determine a proper or fair worker's
compensation premium in respect of the 1991 year between EMI and Donald in
the litigation.