This study set out to focus on the public income security programs, which had been introduced
as a policy response to the inferior economic characteristics of households with the disabled, and
to conduct empirical analysis of their practical effects of poverty reduction, thus offering implications
for effective policy improvements based on ground data. For those purposes, the investigator
extracted income data about households with the disabled from the Korean Welfare Panel
Study(KWSP), applied the FGT poverty indices and factor decomposition analysis(decomposition by
index components, income sources, and subgroups), and examined the achievement, cause and
distribution composition of policy effects according to the relative poverty criteria by comparing
those households with households with no individuals with disabilities. The analysis results show
that the effects of poverty reduction were relatively greater in the households with the disabled
according to the FGT poverty indices and that the inferior characteristics of poverty reality remained
among the households even after security. As for decomposition by index components, social
allowances and insurances had negative(-) effects of income distribution. As for decomposition
by income sources, public assistance and social allowances recorded a higher level of relative
contribution. As for decomposition by subgroups, households with the disabled made a high
contribution according to the comparison results of households with the disabled and those with
no disabled people. When the subgroups of households with the disabled were compared, it was
found that a low level of contribution was observed among single-parent households, households
located in a small- or medium-sized city and an agricultural or fishing town, households with
individuals with a job or self-supporting work, subcategories of disability types, and households
with individuals with a mental disorder. On the premise of rational discrimination and relevance
in a policy approach to guarantee enough policy effects based on those findings, the present study
made proposals about the major improvements of each payment type including public assistance
and the harmonious management of entire income security programs.