Wage theft is a $30 billion a year problem nationally and in the Bay Area, workers in the restaurant, construction, caregiving, manufacturing industries are victims. Tiffany Crain, from the activist group Young Workers United (YWU), says:
It comes in the form of not being paid overtime, not receiving breaks, not being paid at all in some instances, and many other things that are unlawful, work off the clock, they’re told to clock out and told to do other duties and not paid for it.
http://www.todaysworkplace.org/2011/05/16/s-f-activists-launch-anti-wage-theft-campaign/