These problems were formally recognised in an audit by the Ministry of Health in October.
The ministry said the matters have been addressed - but many health care professionals working at border facilities disagree.
The Infection Prevention and Control Audit of Managed Isolation and Quarantine Facilities was released publicly last month. In it, the ministry revealed more facilities have been facing staffing shortages and roster problems.
In a statement to RNZ, the ministry confirmed all matters identified in the audit had been followed up and addressed.
But that is rejected by two of the country s largest nursing unions, which have hundreds of members working in MIQ facilities.
SunLive - COVID-19: MIQ nurses concerned about staffing sunlive.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sunlive.co.nz Daily Mail and Mail on Sunday newspapers.