Working Papers

Inflation and Labor Markets: A Bottom-Up View

(Sophia Chen, Deniz Igan, Do Lee, Prachi Mishra), Ashoka Economics Discussion Papers No.127, October 2024

U.S. inflation surged in 2021-22 and has since declined, driven largely by a sharp drop in goods inflation, though services inflation remains elevated. This paper zooms into services inflation, using proprietary microdata on wages to examine its relationship with service sector wage growth at the Metropolitan Statistical Area (MSA) level. We estimate the wage-price pass-through with a local projection instrumental variable model that exploits variation in labor market tightness across MSAs. Our findings reveal a positive and significant relationship between wages and price growth, with a lag. This suggests that the effects of tight labor markets are persistent and may influence the pace of progression toward the inflation target.

What Policy Combinations Worked? Bank Lending During Covid-19

(Divya Kirti, Sole Martinez Peria, Prachi Mishra, Jan Strasky), IMF Working Paper No. 2023/025 (submitted), April 2024

This paper analyzes inflation dynamics in 21 advanced and emerging market economies since 2020. We decompose inflation into core inflation as measured by the weighted median inflation rate, and headline shocks––deviations of headline inflation from core. Headline shocks occurred largely on account of energy price changes, although food price changes and indicators of supply chain problems also played a role. We explain the evolution of core inflation with two factors: the strength of macroeconomic conditions—measured by the unemployment gap, the output gap, and the ratio of job vacancies to unemployment—and the pass-through into core inflation from past headline shocks. We conclude that the international rise and fall of inflation since 2020 largely reflected the direct and pass-through effects of headline shocks. Macroeconomic conditions generally played a secondary role. In the United States, estimated price pressures from strong macroeconomic conditions had been greater than in other economies but have eased.

E-commerce during Covid in Spain: One “Click” does not fit All

(Prachi Mishra, Alvaro Ortiz, Tomasa Rodrigo, Antonio Spilimbergo, Sirenia Vazquez), IMF Working Paper No. 2024/107, April 2024

The share of e-commerce in total credit-card spending boomed during Covid in Spain. In particular, women, youth, and urban consumers used e-commerce proportionally more during the pandemic, especially for services. Using a unique proprietary dataset on credit card transactions, we test conjectures about consumers’ behavior (based on fear, hoarding, or learning) during Covid. Overall, e-commerce share reverted to its pre-Covid trend as the pandemic waned. However, some consumers with lower pre-Covid e-commerce usage tend to permanently use more e-commerce, supporting the conjecture of “learning by locking” for these individuals.

Measuring U.S. Core Inflation: The Stress Test of COVID-19

(Laurence M. Ball, Daniel Leigh, Prachi Mishra, Antonio Spilimbergo), NBER Working Paper No. 29609, CEPR Discussion Paper No. DP17002. (submitted), April 2024

Large price changes in industries affected by the COVID-19 pandemic caused erratic fluctuations in the U.S. headline inflation rate. This paper compares alternative approaches to filtering out the transitory effects of these industry price changes and measuring the underlying or core level of inflation over 2020-2021, the height of the pandemic. The Federal Reserve’s preferred measure of core, the inflation rate excluding food and energy prices, performed poorly over that period: it was almost as volatile as headline inflation. Measures of core that exclude a fixed set of additional industries, such as the Atlanta Fed’s sticky-price inflation rate, were less volatile, but the least volatile were measures that filter out large price changes in any industry, such as the Cleveland Fed’s median inflation rate and the Dallas Fed’s trimmed mean inflation rate. These core measures followed smooth paths, drifting down when the economy was weak in 2020 and then rising as the economy rebounded.

Tracking Economic and Financial Policies During COVID-19: An Announcement-Level Database

(Divya Kirti, Sole Martinez Peria, Prachi Mishra, Jan Strasky), IMF Working Paper No. 2022/114, June 2022

This paper analyzes inflation dynamics in 21 advanced and emerging market economies since 2020. We decompose inflation into core inflation as measured by the weighted median inflation rate, and headline shocks––deviations of headline inflation from core. Headline shocks occurred largely on account of energy price changes, although food price changes and indicators of supply chain problems also played a role. We explain the evolution of core inflation with two factors: the strength of macroeconomic conditions—measured by the unemployment gap, the output gap, and the ratio of job vacancies to unemployment—and the pass-through into core inflation from past headline shocks. We conclude that the international rise and fall of inflation since 2020 largely reflected the direct and pass-through effects of headline shocks. Macroeconomic conditions generally played a secondary role. In the United States, estimated price pressures from strong macroeconomic conditions had been greater than in other economies but have eased.

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