I am a director of human services research at Mathematica in Cambridge, Massachusetts specializing in food and nutrition policy and labor economics. My research focuses on federal nutrition assistance programs, including the Supplemental Nutrition Assistance Program (SNAP); the Older Americans Act Title III-C Nutrition Services Program, the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC); and community-based emergency food programs. I am interested in low income households' decisions to participate in these programs, especially how those decisions are affected by changes in employment and income. My current work examines work decisions, barriers to work, food security, and food access of low income households.