A look at John Key's Cabinet reshuffle
Senior cabinet ministers have been put in charge of fixing the error-ridden teacher pay system Novopay.
It has been failing since it was rolled out in August and Associate Education Minister Craig Foss hasn't been able to do much about it.
Prime Minister John Key has decided the government's "Mr Fixit" Steven Joyce will be able to find out what's wrong with Novopay, working with Finance Minister Bill English.
"I suspect the problems are deeply embedded," Mr Key said on Tuesday.
"We need senior ministers to drill down into it. Fixing the problems are a priority."
Mr Key says Mr Joyce is a tough and meticulous minister.
"If I was running Novopay I'd consider myself on notice," he said.
Novopay is supplied by Australian company Talent2, which has apologised for thousands of errors which have resulted in teachers being underpaid, not paid or overpaid, and it has promised to fix the system.
It consistently failed to meet deadlines set by Mr Foss, and the government has previously said it is looking at penalty clauses in the contract.