Statutes - Acts of Parliament - Operation and effect of statutes - Retrospective operation - In general - Principles of wide application - Presumption that statutes changing the law are prospective - The need for a contrary intention to appear with reasonable certainty to displace the presumption.
Kraljevich v Lake View & Star Ltd [1945] HCA 29; (1945) 70 CLR 647 and Maxwell v Murphy (1956 - [1957] HCA 7; 1957) 96 CLR 261, applied.
Workers Rehabilitation and Compensation Act 1988 (Tas), s135 (repealed) and s138AB (added).
