Health insurers increasingly compete on their networks of medical providers. Using data from Massachusetts’s insurance exchange, I find substantial adverse selection against plans covering the most prestigious and expensive “star” hospitals. highlight a theoretically distinct channel: consumers loyal to star hospitals incur high spending, conditional state, because they use these hospitals’ car...

Abstract We analyze the extent to which private defensive litigation insurance deters patent assertion by non-practicing entities (NPEs). study effect that a patent-specific product, offered leading insurer, had on behavior of insured patents’ owners, all are NPEs. first model impact enforcers and accused infringers. show availability can have an how often will assert their patents. confirm thi...

To investigate barriers to universal health insurance in developing countries, we designed a randomized experiment involving about 6,000 households Indonesia who are subject government program with weakly enforced mandate. Time-limited subsidies increased enrollment and attracted lower-cost enrollees, part by reducing the strategic timing of correspond needs. Registration assistance also enroll...

Commercial rabbit farms commonly house breeding does in single-litter cages that generate concerns for animal welfare. Group housing increases the space per and allows more natural behaviour. When housed group, however, exhibit aggressive behaviour around parturition continuous group systems have negative effects on reproductive performances. Part-time aims to reduce aggression by delaying grou...

This paper studies how insurance coverage policies impact pharmaceutical innovation. In the United States, most patients obtain prescription drugs through plans administered by Pharmacy Benefit Managers (PBMs). Beginning in 2012, PBMs began refusing to provide for many newly approved when cheaper alternatives were available. We document a shift R&D strategies after this policy took effect: ...

This paper studies whether adverse selection can rationalize a universal mandate for unemployment insurance (UI). Building on unique feature of the policy in Sweden, where workers opt supplemental UI coverage above minimum mandate, we provide first direct evidence and derive its implications design. We find that risk is more than twice as high who buy coverage. Exploiting variation prices, show...

ABSTRACT Insurance pricing is subject to stricter regulation in some states than others. This cross-sectional variation, coupled with the occurrence of staggered deregulation several states, enables a powerful test political cost hypothesis that managers manipulate accruals mitigate adverse effects rate regulation. We show insurers understate their loss reserve more regulated regimes, finding c...