Sectoral heterogeneity matters for monetary policy. Using CPI microdata, we estimate for 227 products a time-varying menu-cost model to investigate the quantitative relevance of this heterogeneity. We find a substantial degree of cross-sectoral heterogeneity in all structural parameters. Heterogeneity in the Calvo component of the pricing friction is, however, the main source of heterogeneity in price rigidity. Cross-sectoral heterogeneity amplifies the output effect of a monetary shock by a factor of about 2.5, compared to a single-sector model estimated with mean moments. Heterogeneity in the Calvo parameter plays a key role in this amplification.

Using data sets on wage agreements at both industry and firm levels in France, we document stylized facts on wage stickiness. The average duration of wages is a little less than one year, and 10% of wages are modified each month by a wage agreement. The frequency of wage change agreements is staggered over the year, but the frequency of effective wage changes is seasonal. The national minimum wage has a significant impact on the probability and the seasonality of wage changes. Negotiated wage increases are correlated with inflation, minimum wage increases, and firm profitability.