The pharmaceutical market has experienced a massive wave of vertical integration between pharmacy benefit managers (PBMs) and health insurers in recent years. Using a unique dataset on insurer-PBM contracts, we document increasing vertical integration in Medicare Part D-vertically integrated...

Incomplete health insurance enrollment is a persistent U.S. challenge despite large subsidies. We ask whether hassles built into enrollment systems matter for insurance take-up and targeting. Studying removal of an auto-enrollment policy, we find that a small hassle - a requirement to actively...

Prior to the passage of the Affordable Care Act (ACA), part-time workers were much less likely than full-time workers to have health insurance. The ACA included multiple provisions intended to raise health insurance coverage rates, including a mandate that employers provide affordable coverage...

The continued rise in the number of non-elderly Americans without health insurance has led to considerable interest in tax-based policies to raise the level of insurance coverage. This paper describes a detailed microsimulation model that has been developed to evaluate such tax-based polices,...

By 1992, pensions and retiree health insurance represented one quarter of the wealth of families on the verge of retirement. Our simulations suggest that between 1969 and 1992, abstracting from the effects of changes in wages and years of covered work on pension benefit amounts, changing pension...

We estimate the impact of employer-provided health insurance (EPHI) on the job mobility of males over time using a dynamic empirical model that accounts for unobserved heterogeneity. Previous studies of job-lock reach different conclusions about possible distortions in labor mobility stemming...

We begin this research with the belief that low and declining levels of private-employer sponsored health insurance were a continuing problem, especially among less skilled workers. Our analysis, however, paints a more complex picture. Using data from the March CPS, the SIP, and CPS benefits...

This article describes the anatomy of health insurance. It begins by considering the optimal design of health insurance policies. Such policies must make tradeoffs appropriately between risk sharing on the one hand and agency problems such as moral hazard (the incentive of people to seek more...

There is growing interest in market design using default rules and other choice architecture principles to steer consumers toward desirable outcomes. Using data from Massachusetts' health insurance exchange, we study an "automatic retention" policy intended to prevent coverage interruptions...

In the United States, households obtain health insurance through distinct market segments. We explore the economics of this segmentation by comparing coverage provided through small employers versus the individual marketplace. Using data from Oregon, we find households with group coverage spend...