School principals have been working out whether their staff have been paid correctly on Wednesday under the Novopay system.
Since Novopay was introduced in August, it has been riddled with mistakes including overpayments, underpayments or no payments at all.
Figures issued by Labour show that 581 people have been paid on behalf of schools they do not work for, and 7899 people have been underpaid or not paid at all.
More than 6000 people have been overpaid and 281 manual payments have been processed to correct faults.
The principal of Auckland's Mount Albert Grammar School Dale Burden said there are problems in this pay round with the amounts some of its 70 support staff have been paid.
Mr Burden said a current staff member ended up with 20 cents.
He said he is especially worried about new staff, and staff taking on additional responsibilities, because attempts to arrange their pay have so far failed.
Mr Burden said the business manager and a deputy principal have worked so many hours to sort out Novopay errors he has invoiced the Ministry of Education for $35,000.
Ministry hopes to sort problems before end of school holidays
The Ministry of Education hopes to have the majority of problems with the Novopay payroll system fixed before the end of the school holidays.
The primary school teachers union, the NZEI, says the Government must dedicate more resources to fixing Novopay.
The ministry said everything possible is being done to get the problems fixed.
Education workforce group manager Rebecca Elvy said the focus is fixing the Novopay system, but the possibility of compensation will be considered after that is done.
Ms Elvy said the ministry is aware of the unpaid hours many school staff are working to sort out Novopay mistakes.