About 4 in 10 of those workers depend on public assistance programs such as food stamps and Medicaid, the study by the worker advocacy group found.___Follow Julie Pace at <a href="http://twitter.com/jpaceDCPolitics">http://twitter.com/jpaceDCPolitics</a> & GovernmentGovernmentBarack Obamaminimum wageWhite Houseexecutive order