"We provide a general framework for the study of cascade effects created by interconnections between sectors, firms or financial institutions. Focusing on a multi sector economy linked through a supply network, we show how structural properties of the supply network determine both whether...

"Economists have shown that large and persistent differences in productivity levels across businesses are ubiquitous. This finding has shaped research agendas in a number of fields, including (but not limited to) macroeconomics, industrial organization, labor, and trade. This paper surveys and...

"Procurement projects often encounter unanticipated problems. Deadlines and penalties are one important instrument used to incentivize contractors to adapt their plans. We develop a theory of highway procurement in which contractors must modify their construction rate following a productivity...