Self-employed people in NZ are required to pay an ACC levy, which entitles them to ACC Cover Plus insurance from the government. It covers you for medical treatment and rehabilitation, and compensates you for 80% in lost earnings in the event you have an injury. The levy you pay for this coverage is based on the type of work you do, your earnings, the claims you’ve made in the past and your future risk.
If you want more or less than the 80% compensation, the government also offers ACC Cover Plus Extra. This provides the same coverage as ACC Cover Plus, but it compensates you for lost earnings based on a pre-agreed amount.