Federal Social Safety Net Programs: Millions of Full-Time Workers Rely on Federal Health Care and Food Assistance Programs, Report to the Ranking Member, Committee on the Budget, U.S. Senate [open pdf - 1MB]
From the Highlights: "Each year millions of wage-earning adults participate in federally funded social safety net programs to help pay for basic needs including health care and food assistance. These individuals may work for employers in the private, public, and nonprofit sectors, or be self-employed. They also may work full-time or part-time schedules. GAO [Government Accountability Office] was asked to review several aspects of this population. This report examines (1) what is known about the labor characteristics of working adult Medicaid enrollees and SNAP [Supplemental Nutrition Assistance Program] recipients and (2) what is known about where adult Medicaid enrollees and SNAP recipients work."
Government Accountability Office: http://www.gao.gov/