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Revisiting Capital-Skill Complementarity, Inequality, and Labor Share

Author

Listed:
  • Lee Ohanian

    (UCLA)

  • Musa Orak

    (Board of Governors)

  • Shihan Shen

    (UCLA)

Abstract

This paper analyzes the quantitative contribution of capital-skill complementarity in accounting for rising wage inequality, as in Krusell, Ohanian, Rios-Rull, and Violante (KORV, 2000). We study how well the KORV framework accounts for more recent data, including the large changes in labor's share of income that occurred after the KORV estimation period ended. We also study how using information and communications technology (ICT) capital as the complementary capital stock affects the model's implications for inequality and overall model fit. We find significant evidence for continued capital-skill complementarity across all model permutations we analyze. Despite nearly 30 years of additional data, we find very little change to the original KORV estimated substitution elasticity estimates when the total stock of capital equipment is used as the complementary capital stock. We find much more capital-skill complementarity when ICT capital is used. The KORV framework continues to closely account for rising wage inequality through 2019, though it misses the three-percentage point decline in labor's share of income that has occurred since 2000. (Copyright: Elsevier)

Suggested Citation

  • Lee Ohanian & Musa Orak & Shihan Shen, 2023. "Revisiting Capital-Skill Complementarity, Inequality, and Labor Share," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 51, pages 479-505, December.
  • Handle: RePEc:red:issued:21-129
    DOI: 10.1016/j.red.2023.05.002
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    Cited by:

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    2. E. Mark Curtis & Daniel G. Garrett & Eric C. Ohrn & Kevin A. Roberts & Juan Carlos Suárez Serrato, 2021. "Capital Investment and Labor Demand," NBER Working Papers 29485, National Bureau of Economic Research, Inc.
    3. Chu, Yihe & Li, Yujia & Che, Ming, 2024. "Population aging and the dynamics of the skill income gap: An analysis of a multiple mediation effect," Finance Research Letters, Elsevier, vol. 62(PB).
    4. Stephen J. Turnovsky & Zinan Wang, 2022. "The Effects of Globalization on Skilled Labor, Unskilled Labor, and the Skill Premium," Open Economies Review, Springer, vol. 33(3), pages 407-452, July.
    5. Castex, Gonzalo & (Stanley) Cho, Sang-Wook & Dechter, Evgenia, 2022. "The decline in capital-skill complementarity," Journal of Economic Dynamics and Control, Elsevier, vol. 138(C).
    6. Giovanni L. Violante, 2022. "Comment on "Human Capitalists"," NBER Chapters, in: NBER Macroeconomics Annual 2022, volume 37, pages 62-73, National Bureau of Economic Research, Inc.
    7. M. Battisti & M. Del Gatto & A. F. Gravina & C. F. Parmeter, 2021. "Robots versus labor skills: a complementarity/substitutability analysis," Working Paper CRENoS 202104, Centre for North South Economic Research, University of Cagliari and Sassari, Sardinia.
    8. Cauvel, Michael & Pacitti, Aaron, 2022. "Bargaining power, structural change, and the falling U.S. labor share," Structural Change and Economic Dynamics, Elsevier, vol. 60(C), pages 512-530.
    9. Nida Çakır Melek & Musa Orak, 2021. "The Income Share of Energy and Substitution: A Macroeconomic Approach," Research Working Paper RWP 21-18, Federal Reserve Bank of Kansas City.

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    More about this item

    Keywords

    Capital-skill complementarity; elasticity of substitution; inequality; labor share; skill premium; technological change;
    All these keywords.

    JEL classification:

    • E25 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Aggregate Factor Income Distribution
    • J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
    • J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials

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