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Working Paper
Equilibrium with Mutual Organizations in Adverse Selection Economies
An equilibrium concept in the Debreu (1954) theory-of-value tradition is developed for a class of adverse selection economies and applied to the Spence signaling and Rothschild-Stiglitz (1976) adverse selection environments. The equilibrium exists and is optimal. Further, all equilibria have the same individual type utility vector. The economies are large with a finite number of types that maximize expected utility on an underlying commodity space. An implication of the analysis is that the invisible hand works for this class of adverse selection economies.
A Closer Look at the Correlation Between Google Trends and Initial Unemployment Insurance Claims
Since the onset of the pandemic, there has been growing interest in tracking labor market activity with “big data” sources like Google Trends.1 Just as an example, one can track how the number of Google searches with the term unemployment office has changed over the past week for the Chicago metro area or explore how unemployment became one of the top searched issues across the U.S. during the early months of the pandemic here.
Newsletter
Homeowners insurance and climate change
Over the past 25 years, the U.S. has experienced a sharp increase in climate-related disasters totaling billions of dollars in damages. For those whose homes are destroyed, the financial impact can be devastating. Fortunately, many have some of their losses covered by homeowners insurance. In 2017—a particularly costly year in terms of weather-related damages—insurers reported around $68 billion in losses from homeowners insurance claims. Still, with the number and intensity of climate-related disasters on the rise, it is important for us to understand the degree to which homes are ...
Report
Unintended Consequences of "Mandatory" Flood Insurance
We document that the quasi-mandatory U.S. flood insurance program reduces mortgage lending along both the extensive and intensive margins. We measure flood insurance mandates using FEMA flood maps, focusing on the discreet updates to these maps that can be made exogenous to true underlying flood risk. Reductions in lending are most pronounced for low-income and low-FICO borrowers, implying that the effects are at least partially driven by the added financial burden of insurance. Our results are also stronger among non-local or more-distant banks, who have a diminished ability to monitor local ...
Report
Barriers to household risk management: evidence from India
Financial engineering offers the potential to significantly reduce the consumption fluctuations faced by individuals, households, and firms. Yet much of this potential remains unfulfilled. This paper studies the adoption of an innovative rainfall insurance product designed to compensate low-income Indian farmers in the event of insufficient rainfall during the primary monsoon season. We first document relatively low adoption of this new risk management product: Only 5-10 percent of households purchase the insurance, even though they overwhelmingly cite rainfall variability as their most ...
Working Paper
Dissecting Idiosyncratic Earnings Risk
This paper examines whether nonlinear and non-Gaussian features of earnings dynamics are caused by hours or hourly wages. Our findings from the Norwegian administrative and survey data are as follows: (i) Nonlinear mean reversion in earnings is driven by the dynamics of hours worked rather than wages since wage dynamics are close to linear, while hours dynamics are nonlinear—negative changes to hours are transitory, while positive changes are persistent. (ii) Large earnings changes are driven equally by hours and wages, whereas small changes are associated mainly with wage shocks. (iii) ...
Newsletter
The Growth and Challenges of Cyber Insurance
Cyberattacks have grown in frequency and cost over the past decade, with high-profile cases, such as the 2013 Target data breach, the 2017 Equifax data breach, and the leak of Democratic National Committee emails during the 2016 election making national headlines. Ransomware attacks, intellectual property theft, and fraud cost companies billions in recovery expenses, fines, and lost revenues every year. More firms are purchasing cyber insurance as a way to cover losses and expenses resulting from cyber incidents.
Working Paper
A Denial a Day Keeps the Doctor Away
Who bears the consequences of administrative problems in healthcare? We use data on repeated interactions between a large sample of U.S. physicians and many different insurers to document the complexity of healthcare billing, and estimate its economic costs for doctors and consequences for patients. Observing the back-and-forth sequences of claim denials and resubmissions for past visits, we can estimate physicians’ costs of haggling with insurers to collect payments. Combining these costs with the revenue never collected, we estimate that physicians lose 18% of Medicaid revenue to billing ...
Working Paper
Insurance and Inequality with Persistent Private Information
This paper studies the implications of optimal insurance provision for long-run welfare and inequality in economies with persistent private information. We consider a model in which a principal insures an agent whose privately observed endowment follows an ergodic, finite Markov chain. The optimal contract always induces immiseration: the agent’s consumption and utility decrease without bound. Under positive serial correlation, the optimal contract also features backloaded high-powered incentives: the sensitivity of the agent’s utility with respect to his report increases without bound. ...
Newsletter
Homeowners’ Financial Protection Against Natural Disasters
Over the past few years, many people in the U.S. have had to deal with damage to their homes from natural disasters, such as Hurricane Harvey. This article explains the different kinds of financial protection from natural catastrophes that homeowners can access from the private and public sectors.