The minimum requirements are:
New Zealand Business Number (NZBN)
Genuine Business (which means business is registered with Inland Revenue (IRD) and that the business should be profitable)
No recent history of regulatory non-compliance
If you have standard accreditation, you will be subject to a job quota of up to 5
Minimise risk of exploitation (which means migrant workers and people making recruitment decisions should complete Employment New Zealand’s online modules for knowing employment rights)