Debate on how to reduce fees on KiwiSaver funds is being welcomed by the Prime Minister.
The Greens have kicked off their election campaign with a pledge to introduce a public option fund for KiwiSaver investments.
It would be managed by the guardians of the Super Fund and help reduce the amount of money lost to people through fees and costs.
John Key says he's not sure about that move, but says the fee issue needs to be looked at.
"If you outsource that to the Government, it might lead to an implied Government guarantee that we're actually guaranteeing the funds, and in KiwiSaver there is no guarantee that your funds are safe so that might be the risk there."