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The Decline of Labor Share and New Technology Diffusion: Implications forMarkups andMonopsony Power

Author

Listed:
  • Shoki Kusaka

    (Department of Economics, Yale University)

  • Tetsuji Okazaki

    (Faculty of Economics, The University of Tokyo)

  • Ken Onishi

    (Hitotsubashi Institute for Advanced Study)

  • Naoki Wakamori

    (Graduate School of Economics, Hitotsubashi University)

Abstract

We study the mechanism behind the decline in labor share using highly detailed plant-level data on the cement industry in Japan. Using information on the production technology in place at each plant, we find that most of the labor share decline can be explained by new technology diffusion (introduction of the “new suspension preheater kiln†). The labor share stays constant, or even slightly increases, over time within plants with the same technology, whereas the aggregate labor share declines as production shifts to plants with a new and more capital-intensive technology. We also find that the information on plant-level technology is key to rejecting other potential hypotheses and that we would reach a qualitatively different conclusion without this information. To show this, we examine, with and without technology information, two alternative hypotheses; (i) the decline in labor share is associated with an increase in markups, and (ii) firms exercise monopsony power in the labor market. We reject these two hypotheses with technology information but may not without it.

Suggested Citation

  • Shoki Kusaka & Tetsuji Okazaki & Ken Onishi & Naoki Wakamori, 2022. "The Decline of Labor Share and New Technology Diffusion: Implications forMarkups andMonopsony Power," CIRJE F-Series CIRJE-F-1208, CIRJE, Faculty of Economics, University of Tokyo.
    • Handle: RePEc:tky:fseres:2022cf1208
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    References listed on IDEAS

    as
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