Ryan Park, who is also member for Keira, said independent Parliamentary Budget Office (PBO) confirmation that his party's plan was fully funded meant Mr Ward's "Foley's funny money" comments had no substance.

He said Labor's plan for NSW prioritises investment in schools and hospitals while maintaining the state's AAA credit rating, keeping the budget in surplus and not increasing debt.

The independent PBO confirmed the $280 million Labor investment fund pledge - which is on top of the $100 million already allocated by the Coalition - was fully costed.

"Gareth Ward today needs to admit that he and the Treasurer have been misleading the Illawarra community about claims that our positive plan for the Illawarra is unfunded," Mr Park said.

"The only ones who are going around making promises with money they don't have is the NSW Liberal government, making commitments based on an asset that hasn't been sold and that the community wants to retain."

Mr Ward said Mr Park was "embarrassing himself" trying to justify why Labor couldn't say which of the 12 projects from the government's $100 million Restart Illawarra fund would be cut.

Mr Ward said all he was asking was for Labor to say which projects had been taken out and whether that meant they would have to cancelled.

"They may well be costed by the Parliamentary Budget Office, that's fine, all I've ever said is tell us which projects you're going to cut," he said.