Effects of ACA Medicaid Expansions on Health Insurance Coverage and Labor Supply

Robert Kaestner, Bowen Garrett, Anuj Gangopadhyaya, Caitlyn Fleming

NBER Working Paper No. 21836
Issued in December 2015, Revised in September 2016
NBER Program(s):Health Economics

We examined the effect of the expansion of Medicaid eligibility under the Affordable Care Act on health insurance coverage and labor supply of low-educated and low-income adults. We found that the Medicaid expansions were associated with large (e.g., 50 percent) increases in Medicaid coverage and corresponding decreases in the proportion uninsured. There was relatively little change in private insurance coverage, although the expansions tended to decrease such coverage slightly. In terms of labor supply, estimates indicated that the Medicaid expansions had little effect on work effort despite the substantial changes in health insurance coverage. Most estimates suggested that the expansions increased work effort, although not significantly.

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Document Object Identifier (DOI): 10.3386/w21836

Published: Robert Kaestner & Bowen Garrett & Jiajia Chen & Anuj Gangopadhyaya & Caitlyn Fleming, 2017. "Effects of ACA Medicaid Expansions on Health Insurance Coverage and Labor Supply," Journal of Policy Analysis and Management, vol 36(3), pages 608-642. citation courtesy of

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