``What we need more than anything is to have large insurers providing the backing.''
Mr Grafton cites the $20 billion the industry footed for the cost of the Christchurch earthquakes.
Small beginnings are being promised for the state-owned insurance company Labour wants to set up.
Finance spokesman David Parker says KiwiAssure would start out small.
``The scope of operations will be houses, contents, vehicles and small business plant.''
Labour is confident New Zealand Post is capable of running such an insurance business.
It wants to set up a state-owned insurance operation along the same lines KiwiBank was set up, and for similar reasons.
NZ Post is currently dealing with major restructuring and has this week announced 2000 job losses
MP Clayton Cosgrove says, despite this, it could run an insurance company.
``This is a different set of products, a different set of clients with a different set of strictures. And I believe so, absolutely.''