“…These variables used here are: the number of trade unions (#U), the number of employers' organizations (#E), trade union density (UD), employers' organization density (ED), collective bargaining coverage (CBC), and the mode of collective bargaining (CBM). These six variables represent a kind of 'standard' set of indicators for industrial relations systems for which the importance is repeatedly argued (e.g., Clegg, 1976;Vernon, 2006;Traxler, 2010) which are usually used in comparisons and for various debates (e.g., Traxler et al, 2001;Marginson and Sisson, 2004;Bechter et al, 2011aBechter et al, , 2012.…”