Why do cities differ so much in productivity? We document that most of the measured dispersion in productivity across … US cities is spurious and reflects granularity bias: idiosyncratic heterogeneity in plant-level productivity and size …

We study the impact of techies—engineers and other technically trained workers—on firm-level productivity. We first …-neutral productivity in both manufacturing and non-manufacturing industries. We find that techies raise firm-level productivity, and this … of techies on productivity operates mostly through ICT and other techies, not R&D workers. Engineers have a greater …

price shocks. Following a migrant inflow, labor costs decline and employment expands. Labor productivity decreases sharply … migration mostly benefits low- productivity firms within locations. As migrants select into high-productivity destinations …, migration however strongly contributes to the equalization of factor productivity across locations …

productivity-enhancing effect. The reform of fixed-term contracts instead did not produce the intended results: it induced a … substitution of temporary employees in favour of permanent ones and reduced capital intensity, generating productivity losses. We …