How do regions acquire the knowledge they need to diversify their economic activities? How does the migration of … workers among firms and industries contribute to the diffusion of that knowledge? Here we measure the industry, occupation …, and location specific knowledge carried by workers from one establishment to the next using a dataset summarizing the …

technological spillovers in generating growth. Because such knowledge spillovers are particularly effective in cities, where … that important knowledge spillovers might be between, rather than within industries, consistent with the theories of Jacobs …