The programme designed to protect SkyCity gamblers from addiction has never been reviewed - even though having it is a condition of the casino's licence.
The Gambling Commission says it has been too busy, so it has put the review of the "responsible gambling programme" on the "back burner".
The admission comes amid negotiations between the Government and SkyCity over the $350 million national convention centre. SkyCity has offered to build the centre in return for concessions on gambling.
It wants early renewal of its licence, more gambling machines, automated gaming tables and an increase in the number of other table games.
Economic Development Minister Steven Joyce - whose officials are negotiating with SkyCity - has previously given assurances over the Government's focus on problem gambling.