"There is considerable policy concern about 'DI lock' -- that tying public health insurance coverage to cash disability benefit receipt contributes to the low exit rates due to work.... [I]ncreasing health insurance access does increase the likelihood of positive earnings among a subset of disability beneficiaries. [This study finds] evidence of SSI lock among beneficiaries with some Medicaid expenditures and find that both non-group health insurance regulation and generous Medicaid eligibility help alleviate the problem."  MORE >>