This study tests for adverse selection in the established Affordable Care Act (ACA) health insurance exchanges established in 2014, and quantifies the consequences for consumer welfare and market efficiency. Using a new statewide dataset of medical claims from Colorado, I use plausibly exogenous...

The Affordable Care Act is one of the most debated and dividing pieces of legislation in recent memory. One of the main elements of the ACA is the optional expansion of Medicaid eligibility to 138\% of the federal poverty line. The current debate has focused on the direct effects of the newly...

This paper proposes a test for the existence and degree of contagious presenteeism and negative externalities in sickness insurance schemes. First, we theoretically decompose moral hazard into shirking and contagious presenteeism behavior and derive testable conditions. Then, we implement the...

We examine the early effects of U.S. state Medicaid expansions under the Affordable Care Act (ACA) on substance use disorder (SUD) treatment utilization. We couple administrative data on admissions to specialty SUD treatment and prescriptions for medications used to treat SUDs in outpatient...

This paper is motivated by our attempt to answer an empirical question: how is private health insurance take-up in Australia affected by the income threshold at which the Medicare Levy Surcharge (MLS) kicks in? We propose a new difference de-convolution kernel estimator for the location and size...

Young people with private health insurance sometimes transition to the public health insurance safety net after they get sick, but popular sources of cross-sectional data obscure how frequently these transitions occur. We use longitudinal data on almost all hospital visits in New York from 1995...

Private health insurance plays a central role in the Australia's healthcare system and improving the efficiency of the industry as a means of lowering premiums to policyholders is an important goal of the existing legislation and regulatory framework. In this paper, we examine the technical and...

Based on published estimates of its price elasticity of demand and of tax wedges, as well as the method of revealed preference, I estimate that the annual social value of ESI is about $1.5 trillion beyond what policyholders, their employers, and taxpayers pay for it. The private component of...

Health spending has risen rapidly in Japan. We find two-thirds of the spending increase over 1990–2011 resulted from ageing, and the rest from excess cost growth. The spending level will rise further: ageing alone will raise it by 3½ percentage points of GDP over 2010–30, and excess cost...

This study provides plausibly causal estimates of the effect of public insurance coverage on the employment of non-elderly, non-disabled adults without dependent children ("childless adults"). We use regression discontinuity and propensity score matching difference-in-differences methods to take...