Methods: This longitudinal study estimated changes in household economic well-being among 895 low-income households who participated in Hope between 2010 and 2012. Economic well-being was measured by changes in household monthly income and income-to-needs ratio. Data came from the Hope Panel Study and Korean Welfare Panel Study. This study used the propensity score matching (PSM) and difference-in-differences (DID) to remove internal validity threats. For matching two groups, we chose the socio-demographic characteristics of household and household heads as conditioning variables referring to empirical studies: household composition, region, housing tenure status, baseline earned income, gender, marital status, age, education, health status, and employment.
Results: This study revealed three major findings: (a) the impact of Hope varied over household income distributions; (b) lower income households were more likely to increase their monthly earned income and income-to-needs ratio compared to demographically similar nonparticipants, while higher income households were less likely to increase their income and income-to-needs ratio; and (c) among the Hope participants, those who were single, resided in non-metropolitan areas, or had higher earned income in 2010 were less likely to increase their earned income and income-to-needs ratio two years after the program.
Conclusions and implications: These preliminary findings suggest that incentives provided in Hope helped some but not all participants increase earnings and improve their income poverty status. We describe how future research is needed to better understand how the Hope program impacts a household’s assets and behavioral changes in the long-run. To more effectively address poverty, the Hope program might consider lowering its income eligibility to allow for more low-income households joining the program. Furthermore, we suggest targeted and "just-in-time" case management to target other non-income aspects of social development.