When workers' investments in firm-specific skills are non-contractible underinvestment may occur because of holdup. Up-or-out contracts can potentially solve this problem by limiting the firm's scope for opportunistic behavior. The downside of such contracts is that a worker who does not make...

We study experimentally whether employers or workers should invest in firm specific training. Only workers are assumed to have an alternative trading opportunity. Both the turnover costs case where this alternative takes the form of an outside option and the no-friction case where it serves as a...