R&D Spillovers and Scientist and Engineer Labor Mobility. Richard Freeman, June 2015, Paper. “Using Census data that link U.S. workers to their workplaces we estimate how much past employment in R&D-performing firms raises scientists’ and engineers’ (S&E) wages and thus their marginal product at new employers. We find that S&E workers who arrive at a new firm that is R&D active having been exposed to R&D in previous employment are more productive. We then use Census data to estimate establishment-level production functions showing that both the establishment’s own R&D and R&D activities by other firms…Link