NZ Post's courier drivers are taking action through the Employment Court, seeking to have themselves declared employees and not contractors.
The union says the drivers have no rights to paid annual leave, public holidays, paid sick leave or bereavement leave, and they can't earn overtime pay.
John Maynard is the Co-National President of the Postal Workers Union.
NZ Post declined to come on the programme Monday morning.
Maynard spoke to Corin Dann.
