Does better access to skilled workers reduce firms' willingness to provide general skills training to unskilled workers? We analyze how the gradual opening of the Swiss labor market to workers from the European Union affected the number of apprenticeship positions that firms provide. We exploit...

Using a large database of online job postings, we demonstrate that employee skill requirements rise when there is a larger supply of relevant job seekers. We identify this effect using variation across time, occupations, and places, which allows us to control for potentially confounding factors....

Recent years have brought growing evidence for an increasing labour demand for high skilled and a deterioration of the labour position of less skilled employees. The two most common explanations for this finding are an increasing international trade and a skill biased technological change....

Investigating the robustness of the skill-biased technical change hypothesis, this analysis incorporates two novel features. First, effective labor is modeled as the product of a quantity measure - number of employees with a given level of education - and a quality index, depending on, i.a.,...