Labour leader David Cunliffe took the attack to Prime Minister John Key as the Government backed a convention centre deal with SkyCity, claiming there was nothing "Trader John" would not trade.
Mr Cunliffe said the New Zealand International Convention Centre Bill - which passed its final vote yesterday by 61 votes to 59 - bailed out big business and went against the interests of New Zealand families.
"The Prime Minister's personal style is on display for the world to see. Business calls him a map with no compass. He's known colloquially as Trader John and there is nothing, Sir, nothing that he will not trade."
The Labour leader claimed the Government had given SkyCity special treatment, and cited the Auditor-General's investigation into the "flawed" tender process for a convention centre.
Finance Minister Bill English said the Government had carefully managed the risk of increased gambling facilities at SkyCity, and these risks were outweighed by the economic benefits of the deal. Mr English said 1000 people would be employed during the construction of the convention centre and 800 staff would be employed once it was built. He estimated it would generate $90 million a year in spending by delegates and an increase to GDP of $49 million.