States employ a lower share of skilled workers because their industry structure is biased towards less skill-intensive industries and because they use fewer skills within industries. The differences in the shares of (high-skilled) non-production workers are dominated by the between (industrial) effect. In contrast, the dynamic analysis of [2000][2001][2002][2003][2004] shows that changes in the share of high-skilled non-production workers are mostly driven by within industry changes, which are probably related to skill-biased technological change. The results indicate the weakening of this process, at least for non-production workers. The diffusion of the increased demand for skills within sectors is witnessed for the higher income EU12 country group, but less strongly for the EU25 country group.