What caused the post-pandemic inflation in France? An analysis using the Bernanke–Blanchard model

Abstract

We analyse post-pandemic inflation in France using the Bernanke–Blanchard semi-structural model of wage and price inflation. This model builds on a wage Phillips curve, a mark-up price-setting equation and adaptive equations for short- and long-run inflation expectations. Wage and price inflation as well as inflation expectations are modelled as functions of a labour market slack indicator (the vacancies-to-unemployed ratio), energy and food price shocks, a measure of supply-chain disruptions (“shortages”) and other exogenous factors (trend productivity, Covid lockdowns/re-openings). We estimate the model from the 1990s to 2023Q2 and derive impulse response functions and historical decomposition of endogenous variables during the pandemic era. As BB for the US, we find that the main driver of the post-pandemic inflation was the energy price shocks at first, followed by the food price shocks. Labour market conditions initially played a minor role in inflation, although the substantial increase in wage inflation observed between 2021Q4 and 2023Q2 can be attributed predominantly to the tightening of the labour market.