Labour is rejecting National's claims of wasteful spending on government reviews and working parties.
The National Party said the Labour-New Zealand First coalition had set up 206 inquiries at a cost of $700,000 a day.
National's leader Simon Bridges said ministers were delegating their jobs to consultants and former politicians.
But State State Services Minister Chris Hipkins said National had listed a lot of items that were actually core government work.
Mr Hipkins said 43 percent of the spending National referred to related to the Royal Commission into historical abuse in state care and churches, the mental health inquiry and the Pike River recovery agency.
The National Party's research was "incredibly lazy", Mr Hipkins said.