Lembcke, Alexander C.; Kohn, Karsten; Fitzenberger, Bernd - 2008
coverage is much higher than union density; and not all employees in a covered firm are necessarily covered. This institutional … setup suggests to explicitly distinguish union power as measured by net union density (NUD) in a labor market segment … level and on wage dispersion. A higher union density reinforces the effects of coverage, but the effect of union density is …