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From Population Growth to Firm Demographics: Implications for Concentration, Entrepreneurship and the Labor Share

Author

Listed:
  • Hugo Hopenhayn

    (University of California Los Angeles)

  • Julian Neira

    (University of Exeter)

  • Rish Singhania

    (University of Exeter)

Abstract

The US economy has undergone a number of puzzling changes in recent decades. Large firms now account for a greater share of economic activity, new firms are being created at a slower rate, and workers are getting paid a smaller share of GDP. This paper shows that changes in population growth provide a unified quantitative explanation for these long-term changes. The mechanism goes through firm entry rates. A decrease in population growth lowers firm entry rates, shifting the firm-age distribution towards older firms. Heterogeneity across firm age groups combined with an aging firm distribution replicates the observed trends. Micro data show that an aging firm distribution fully explains i) the concentration of employment in large firms, ii) and trends in average firm size and exit rates, key determinants of the firm entry rate. Building on empirical work that documents a negative relationship between firm size and labor share, we show that firm aging increases the market share of larger firms, leading to a decline in the aggregate labor share.

Suggested Citation

  • Hugo Hopenhayn & Julian Neira & Rish Singhania, 2019. "From Population Growth to Firm Demographics: Implications for Concentration, Entrepreneurship and the Labor Share," 2019 Meeting Papers 629, Society for Economic Dynamics.
    • Handle: RePEc:red:sed019:629
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    More about this item

    JEL classification:

    • E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical
    • E20 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - General (includes Measurement and Data)
    • J11 - Labor and Demographic Economics - - Demographic Economics - - - Demographic Trends, Macroeconomic Effects, and Forecasts
    • L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure
    • L26 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Entrepreneurship

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