Declare ACC to be in big financial trouble, even though it collects about $1 billion a year more in revenue than it pays out in claims. Rachet up the levies for everyone. Single out motorcyclists for an especially harsh increase. Then cut the cover for lots of things such as hearing loss. Make it really hard for the victims of sexual abuse.
Then quietly prepare part of the ACC scheme for privatisation, even though it is demonstrably the fairest and most cost-effective scheme in the world and the envy of many nations.