This session brings together research on public health insurance that addresses its interactions with other insurance markets and the labor market. At its foundation, public health insurance provides both an insurance program for the needy and a set of potentially distortionary incentives. Each paper in this session examines the insurance and/or labor market effects of public health insurance policy parameters such as income limits, eligible groups, or recertification periods. In the first paper in this session, the researchers examine the consequences of children’s health insurance expansions, focusing on understanding participation patterns across subgroups and effects on private insurance coverage. The authors of the second paper examine adult Medicaid expansions, focusing on the insurance effects of raising adult income thresholds in states with varying initial threshold levels. The third paper in the session focuses on the labor supply effects of Medicaid expansions to childless adults, who are a large target group under the Affordable Care Act. Finally, the fourth paper addresses the labor supply effects of gaps in Medicaid eligibility enforcement generated through potentially long recertification periods. Each of these papers provides analysis of policies that are currently implemented or under consideration, and as a group they provide a wealth of insight into how public health insurance policy affects broader insurance and labor markets.