We study optimal risk adjustment in imperfectly competitive health insurance markets when high-risk consumers are less likely to switch insurer than low-risk consumers. First, we find that insurers still have an incentive to select even if risk adjustment perfectly corrects for cost differences...

This paper examines the impact of coinsurance exemption for prescription medicines applied to elderly individuals in Spain after retirement. To evaluate this coinsurance change we use a rich administrative dataset that links pharmaceutical consumption and hospital discharge records for the full...

Estimates of moral hazard in health insurance markets can be confounded by adverse selection. This paper considers a plausibly exogenous source of variation in insurance coverage for childbirth in California. We find that additional health insurance coverage induces substantial extensions in...

Using data of Italian public healthcare providers over years 2001 through 2008, we evaluate the impact of two policies adopted by Italian Regions (i.e., States) to cope with increasing medical malpractice costs using a Difference-in-Difference specification. We assess the impact of the policies...

Based on the notion that good health is one of the basic right of all citizens, the Government of Indonesia (GoI) has promoted programs on health care financing for the poor. One of these programs is the Jaminan Pemeliharaan Kesehatan (JPK). In 2003, the pilot project on JPK for the poor...

Based on the notion that good health is one of the basic right of all citizens, the Government of Indonesia (GoI) has promoted programs on health care financing for the poor. One of these programs is the Jaminan Pemeliharaan Kesehatan (JPK). In 2003, the pilot project on JPK for the poor...

Long-term care expenditures constitute one of the largest uninsured financial risks facing the elderly in the United States and thus play a central role in determining the retirement security of elderly Americans. In this essay, we begin by providing some background on the nature and extent of...

Risk classification refers to the use of observable characteristics by insurers to group individuals with similar expected claims, compute the corresponding premiums, and thereby reduce asymmetric information. An efficient risk classification system generates premiums that fully reflect the...

This paper investigates consumer switching costs in the context of health insurance markets, where adverse selection is a potential concern. Though previous work has studied these phenomena in isolation, they interact in a way that directly impacts market outcomes and consumer welfare. Our...

We examine the effects of the most durable employer health insurance mandate in the United States, Hawaii's Prepaid Health Care Act, using Current Population Survey data covering the years 1979 to 2005. Relying on a variation of the classical Fisher permutation test applied across states, we...