This paper uses transaction-level data from a large discount chain together with zip-code-level explanatory variables to learn about consumer payment choices across size of transaction, location, and time. With three years of data from thousands of stores across the country, we identify...

This paper investigates a puzzle and possible policy concern: Why do platforms such as eBay and Visa that enable the trade of goods of different unobserved costs and values rely predominantly on linear ad-valorem fees, that is, fees that increase in proportion to the sale price of the trades...

Taking the early U.S. automobile industry as an example, we evaluate four competing hypotheses on regional industry agglomeration: intra-industry local externalities, inter-industry local externalities, employee spinouts, and location fixed-effects. Our findings suggest that inter-industry...

This paper studies unintended consequences of price cap regulation in the presence of demand externalities in the context of payment cards. The recent U.S. debit card regulation was intended to lower merchant card acceptance costs by capping the maximum interchange fee. However, small-ticket...

This paper studies the diffusion and impact of a cost-saving technological innovation—Internet banking. Our theory characterizes the process through which the innovation is adopted sequentially by large and small banks, and how the adoption affects bank size distribution. Applying the theory...

I study a non-stochastic, perfect foresight, general equilibrium model with a banking system that may hold large excess reserves when the central bank pays interest on reserves. The banking system also faces a capital constraint that may or may not be binding. When the rate of interest on...

I study firm characteristics that justify the use of options or refresher grants in the optimal compensation packages for CEOs in the presence of moral hazard. I model explicitly the determination of stock prices as a function of the output realizations of the firm: Symmetric learning by all...

Data reveal that individuals experience a high number of occupational switches. Over 40% of high school graduates transition between white and blue collar occupations more than once between the ages of 18 and 28. This paper develops a life cycle model of occupational choices based on workers...

The Earned Income Tax Credit (EITC) is the single most important transfer program in place in the United States. An aspect of the EITC that has received little attention thus far is its role as a public insurance program. Yet, the structure of the EITC necessarily protects its primary class of...

The aftermath of the recent recession has seen numerous calls to use transfers to poorer households as a means to enhance aggregate activity. We show that the key to understanding the direction and size of such interventions lies in labor supply decisions. We study the aggregate impact of...