The Corrections Department has revealed that minimum staffing levels are not stipulated in a contract it has signed with a private prison firm.
British company Serco has a $400 million contract to run Auckland Central Remand Prison at Mt Eden.
The deal was formalised on Tuesday and a phased handover will be completed by August.
It remains unclear how many of the prison's existing staff will have jobs under Serco.
Corrections' finance and infrastructure general manager John Bole says of the 360 workers at the site, 336 have received application packs for jobs with the new employer.
Mr Bole said the salaries offered are similar to those that prison officers' earn at present.
He said Serco will run the prison 10% more cheaply than the Corrections Department can.