Premium subsidies have been advocated as an alternative to social health insurance. These subsidies are paid if expenditure on health insurance exceeds a given share of income. In this paper, we examine whether this approach is superior to social insurance from a welfare perspective. We show...

We study determinants of COVID-19 vaccine donations from recipients' perspective, especially considering supply chain and institutional weakness (corruption) aspects. Results, based on data from more than 131 nations, show that strengthened supply chains reduced donations. The impacts of...

We study determinants of COVID-19 vaccine donations from recipients' perspective, especially considering supply chain and institutional weakness (corruption) aspects. Results, based on data from more than 131 nations, show that strengthened supply chains reduced donations. The impacts of...

We study how a regulator can best target inspections. Our case study is a US Occupational Safety and Health Administration (OSHA) program that randomly allocated some inspections. On average, each inspection averted 2.4 serious injuries (9%) over the next five years. We use new machine learning...

The Covid-19 pandemic has brought renewed attention to rationing guidelines for scarce medical resources. This paper describes the benefits of using a reserve system over a priority system in operationalizing compromises between certain ethical goals. In the last two years, more than a dozen...

Many centralized assignment systems seek to not only provide good matches for participants' current needs, but also to accommodate changes in preferences and circumstances. We study the problem of designing a dynamic reassignment mechanism in the context of Norway's system for allocating...

Firms often exploit loopholes in government contracts to boost revenues. The welfare consequences of this behavior depend on how firms use the marginal windfall dollar, yet little evidence exists to guide policymakers. This paper studies how hospitals allocated over $3 billion obtained from...