It was scheduled to take effect Oct. 15.
Casino owners have opposed the ban from the beginning, saying it would hurt revenue and cost people jobs.
The head of the largest casino workers' union now agrees that a delay is in order.
Local 54 President bob McDevitt says it's not a good time to do something that could hurt business.
But some casino workers still want the ban and are expected to make their feelings known to the council at tomorrow's meeting.