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It's Baaack: The Surge in Inflation in the 2020s and the Return of the Non-Linear Phillips Curve

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  • Benigno, Pierpaolo
  • Eggertsson, Gauti

Abstract

This paper proposes a non-linear New Keynesian Phillips curve (Inv-L NK Phillips Curve) to explain the surge of inflation in the 2020s. Economic slack is measured as firms' job vacancies over the number of unemployed workers. After showing empirical evidence of statistically significant nonlinearities, we propose a New Keynesian model with search and matching frictions, complemented by a form of wage rigidity, in the spirit of Phillips (1958), that generates strong nonlinearities. Policy implications include the thesis that appropriate monetary policy can bring inflation down without a significant recession and that the recent inflationary surge was mostly generated by a "labor shortage" -- i.e. an exceptionally tight labor market.

Suggested Citation

  • Benigno, Pierpaolo & Eggertsson, Gauti, 2023. "It's Baaack: The Surge in Inflation in the 2020s and the Return of the Non-Linear Phillips Curve," CEPR Discussion Papers 18116, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:18116
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    3. Francesco Furlanetto & Antoine Lepetit, 2024. "The Slope of the Phillips Curve," Finance and Economics Discussion Series 2024-043, Board of Governors of the Federal Reserve System (U.S.).

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    JEL classification:

    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory
    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • E30 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - General (includes Measurement and Data)
    • E40 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - General
    • E50 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - General
    • E60 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - General

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