This paper proposes a new measurement for the specificity of occupations based on a content analysis of training curricula that we link to labor market demands. We apply Lazear's (2009) skill weights approach and test predictions on labor market outcomes derived from his theory. We find clear evidence of a trade-off between earning higher returns with more specific training and higher occupational mobility with less specific training. Our measure improves the micro-foundation of human capital specificity and provides an evidence-based approach to evaluate the specificity of training curricula.

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