Abstract
Capital-skill complementarity is tested for two different definitions of skill, using data from 32 West German manufacturing industries from 1975–1990. Using the Kmenta approximation for the CES function provides strong support for complementarity between white collar workers and capital. On the other hand, when “skill” is defined as skilled white collar and blue collar workers, we find essentially no evidence for complementarity. This surprising result suggests that the official classification of skilled production workers does not capture the planning activity most complementary to increasing capital intensity and technological progress.
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