hypotheses. First, that most of the recent increase in the dispersion of wages and productivity has occurred across … establishments and these changes are linked. Second, that the increased dispersion in wages and productivity across establishments is …-plant measures of wage and productivity dispersion have increased substantially over the last few decades; and (4) a significant …

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 …