Percent Change in Average Earnings of Voucher Holders over 30-Month Study Period FSS Only FSS + Incentives Incentives Only Food stamp recipient at baseline 15.2% 9.3% 18.7%Not receiving food stamp -7.9 -2.6 -8.8Working at baseline -2.4 -6.5 3.6Not working at baseline 24.3 45.4 17.1Chart shows percent change between program and control groups within each investigation.Source: Verna, N., Tessler, B., Miller, C., Riccio, J.A., Rucks, Z. and Yang, E. (2013). Working Toward Self-Sufficiency: Early Findings from a Program for Housing Voucher Recipients in New York City. Washington, D.C.: MDRC. Retrieved from: http://www.mdrc.org/working-toward-self-sufficiency.