Workers will not pay for general on-the-job training if contracts are not enforceable. Firms may if there are mobility frictions. Private information about worker productivities, however, prevents workers who quit receiving their marginal products elsewhere. Their new employers then receive...

We expand Acemoglu and Pischke's seminal model of training in imperfect labor markets by including the system of collective wage bargaining and the components of firms' training costs. Thus we can adapt their model to institutional changes that occurred since the 1990s. The model and the...