A special call centre set up to deal with pay problems for teachers and school support staff' logged hundreds of calls on Wednesday.
Ministry of Education staff were brought in on the Waitangi Day public holiday because of expected difficulties with the latest pay round.
Ministry spokesperson Rebecca Elvy says staff took about 260 calls to 2pm and Novopay logged more than 80 calls at its call centre.
Ms Elvy says most calls involved staff who were not paid or were significantly underpaid.
She says the ministry is processing 60 direct payments, which were going into bank accounts on Wednesday despite it being a public holiday.
She says direct payments can also be made on Thursday.
Ms Elvy says errors with the latest pay cycle are expected to run into the many hundreds.
A report is being compiled over the coming days on the pay round for the Government minister dealing with Novopay, Steven Joyce.