Labour Leader David Cunliffe says claims by Prime Minister John Key that Labour has promised SkyCity it will not revoke the international convention centre deal are an example of Mr Key "making it up again".
Legislation allowing for the casino company to build a $400 million convention centre in return for hundreds of additional gambling machines and other regulatory concessions was reported back to Parliament by the commerce committee yesterday.
While the Government-dominated committee recommended the bill be passed, it was opposed by Labour and the Greens in their minority views.
The Labour Party minority view also included advice from officials confirming that the bill, including provisions that would see SkyCity compensated if any of the regulatory concessions under the deal were removed, could be amended in future.
The report states that Labour MPs "reserve the right to change the law when in government".