National Employment Law Project on wage abuses

The National Employment Law Project (NELP) describes itself as a non profit law and policy organization advocating on behalf of low-wage, unemployed and immigrant workers. It has recently published two papers on civil and criminal penalties for non-payment of wages. Non-payment, delays in payment, and failure to pay overtime are common complaints among immigrant workers.
The two papers are Fifty state chart of penalties for unpaid wages and Criminal penalties for failure to pay wages