This paper studies the relationship between wages and the degree of firm heterogeneity in a given industry under different wage setting structures. To derive testable hypotheses, we set up a theoretical model that analyses the sensitivity of wages to the variability in productivity conditions in...

Using a representative establishment data set for Germany, we show that more than 40 percent of plants covered by collective agreements pay wages above the level stipulated in the agreement, which gives rise to a wage cushion between the levels of actual and contractual wages. Cross-sectional...