We use the regional and time variation of training grants in Italy to identify the causal effect of (formal continuing vocational) training on earnings. We estimate log-linear earnings regressions with constant marginal returns to training and find that one additional week of training increases monthly net earnings by 1.36%, substantially less than the 3% or more often found in the literature. Estimated returns vary significantly by firm size, and range from 0.40% in firms with more than 100 employees to 2.51% in smaller firms, the bulk of the Italian private sector. A simple back of the envelope comparison of the marginal costs and benefits of training policy suggests that the latter are higher than the former. Url or DOI https://doi.org/10.1016/j.labeco.2012.03.002 Authors Giorgio Brunello Simona Lorena Comi Daniela Sonedda Country Italy Publication Year 2012 Ranges Intervention Intervention Start Year 1997 Intervention End Year 2005 Evaluation Evaluation Start Year 1999 Evaluation End Year 2005 Policy field Training Classroom/vocational training Target group Labour market status Employed Details Funding Source ESF + other Outcome Variable Income/wages Data Source Survey Evaluation Method IV