The 30 workers charged that Wang violated numerous New York State labour laws at his Chinatown operation.
According to the New York Post (http://nyp.st/yuSEE1 ), the $50 million lawsuit claims the workers had to spend long hours in a cramped, windowless room.
The suit was filed in Queens Supreme Court.
Representatives for Wang declined to comment. They said they had not yet been served with the papers.
Wang opened a flagship store in Chinatown last year.