Hon Dr AYESHA VERRALL: As the member will know from her time in Government, the legislation guidelines are clear that the starting point for all legislation is that it should have prospective, not retrospective, effect. Retrospective changes to ACC would make it extremely difficult to predict the volume of claims that would be made to ACC and balance the interest of ACC levy payers. There are exceptions to this rule, but Cabinet's test for retrospective cover includes things like addressing a previous legal error or addressing a matter that is essential for public safety. While there have been some retrospective changes to ACC to correct errors, new categories of cover have not been created retrospectively, and doing so would create a dangerous precedent.