Joris Tielens

We study cost-price dynamics in normal times and during inflation surges. Using microdata on firms prices and production costs we construct an empirical measure of price gapsthe deviation between a firms listed and optimal price. We then examine the mapping between gaps and price changes in the...

We use a unique high-frequency micro-dataset to estimate the slope of the primitive form of the New Keynesian Phillips curve, which features marginal cost as the relevant real activity variable. Our dataset encompasses product-level prices, costs, and output within the Belgian manufacturing sector...