(Chicago, IL) -- Attorney General Lisa Madigan says her office is teaming up with the Department of Labor to investigate alleged worker abuse at Chinese buffets around Illinois. She says there are allegations of wage payment and minimum wage violations and discrimination against mostly immigrants. Workers say they're being asked to work 11-to-13 hours per day without breaks, six days a week. There are also claims that some are forced to work under threats of abuse and violence. Madigan says they take these kinds of threats seriously, and she's encouraging any current or former workers to contact her office to report any instances of abuse or discrimination.