J. Daniel Kim

University of Pennsylvania
Wharton School
3620 Locust Walk
2029 Steinberg-Dietrich Hall
Philadelphia, PA 19104

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Institutional Affiliation: University of Pennsylvania

NBER Working Papers and Publications

September 2020Immigration and Entrepreneurship in the United States
with Pierre Azoulay, Benjamin Jones, Javier Miranda: w27778
Immigration can expand labor supply and create greater competition for native-born workers. But immigrants may also start new firms, expanding labor demand. This paper uses U.S. administrative data and other data resources to study the role of immigrants in entrepreneurship. We ask how often immigrants start companies, how many jobs these firms create, and how these firms compare with those founded by U.S.-born individuals. A simple model provides a measurement framework for addressing the dual roles of immigrants as founders and workers. The findings suggest that immigrants act more as "job creators" than "job takers" and that non-U.S. born founders play outsized roles in U.S. high-growth entrepreneurship.
January 2020The Servicification of the US Economy: The Role of Startups versus Incumbent Firms
with Mercedes Delgado, Karen Mills
in The Role of Innovation and Entrepreneurship in Economic Growth, Michael J. Andrews, Aaron Chatterji, Josh Lerner, and Scott Stern, editors
Over the last few decades, the U.S. economy has exhibited a significant shift from manufacturing towards services. This transition has been particularly prominent in an important subcategory of services industries that drives innovation and employs many high-wage workers: Supply Chain Traded Services (Delgado and Mills, 2020). These industries provide specialized service inputs to organizations and are characterized by high upstreamness, which allow innovations to cascade down to other buyer industries. In this chapter, we explore the role of startups versus incumbent firms in driving the transition from manufacturing to Supply Chain Traded Services between 1998 and 2015. Using the Longitudinal Business Database of the U.S. Census Bureau, we find that startups experienced a large decline i...
April 2018Age and High-Growth Entrepreneurship
with Pierre Azoulay, Benjamin Jones, Javier Miranda: w24489
Many observers, and many investors, believe that young people are especially likely to produce the most successful new firms. We use administrative data at the U.S. Census Bureau to study the ages of founders of growth-oriented start-ups in the past decade. Our primary finding is that successful entrepreneurs are middle-aged, not young. The mean founder age for the 1 in 1,000 fastest growing new ventures is 45.0. The findings are broadly similar when considering high-technology sectors, entrepreneurial hubs, and successful firm exits. Prior experience in the specific industry predicts much greater rates of entrepreneurial success. These findings strongly reject common hypotheses that emphasize youth as a key trait of successful entrepreneurs.

Published: Pierre Azoulay & Benjamin F. Jones & J. Daniel Kim & Javier Miranda, 2020. "Age and High-Growth Entrepreneurship," American Economic Review: Insights, vol 2(1), pages 65-82. citation courtesy of

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