Using a linked employer-employee data set, this paper analyses the relationship between …rm-pro…tability and wages. Particular emphasis is given to the question of whether the sensitivity of wages to …rm-speci…c rents varies with collective bargaining coverage. To address this issue, we distinguish sectorspeci…c wage agreements, …rm-speci…c wage agreements and wage determination without any bargaining coverage. Our …ndings indicate that individual wages are positively related to …rm-speci…c rents in the non-union sector and under …rm-speci…c contracts. Industry-wide wage contracts, however, seem to suppress …rm-level rent-sharing. While pooled OLS estimates yield a positive correlation between wages and quasi-rents under centralised contracts, estimates accounting for unobserved individual and establishment heterogeneity point to a coe¢ cient of zero. Di¤erenced GMM estimates accounting for the endogeneity of our pro…tability measure even point to a negative relationship under centralised contracts. Non-technical summary: This paper analyses whether wages in Germany respond to …rm-speci…c pro…tability conditions. Particular emphasis is given to the question of whether the sensitivity of wages to …rm-speci…c rents varies with collective bargaining coverage. To address this issue, we distinguish sector-speci…c wage agreements, …rm-speci…c wage agreements and wage determination without any bargaining coverage. Theoretical considerations lead us to expect the sensitivity of wages to …rm-speci…c rents to be larger under …rm-speci…c contracts than in non-covered …rms. The same is likely to hold for industry-wide agreements, provided the bargaining parties make use of ‡exibility provisions, which recently have become a widespread element of central wage agreements. Since direct information on the use of ‡exibility provisions in …rms subject to an industry-wide wage agreement is unavailable, we take our empirical …ndings as an indirect test of whether the use of such provisions is a quantitatively important phenomenon in Germany.Using linked employer-employee data from the mining and manufacturing sector, our empirical analysis o¤ers a remarkably consistent picture: Individual wages are positively related to …rm-speci…c quasi-rents, but this appears to be con…ned to the non-union sector and to …rm-speci…c contracts. Industry-wide wage agreements, in contrast, appear to suppress rent-sharing at the …rm level. While pooled OLS estimates yield a positive correlation between wages and quasi-rents under centralised contracts, estimates accounting for unobserved individual and establishment heterogeneity point to a coe¢ cient of zero. Di¤erenced GMM estimates accounting for the endogeneity of our pro…tability measure even point to a negative relationship between wages and …rm-speci…c pro…tability under centralised contracts. Although this result is di¢ cult to interpret, it leads us to conclude that the lower responsiveness of wages to …rm-speci…c conditions under centralised contracts is not simply due to a downward-...