Competition and Hold-Ups.

In an environment in which both workers and firms undertake match specific investments, the presence of market competition for matches may solve the hold-up problems generated by the absence of complete contingent contracts. In particular, this paper shows that in a world in which workers' and firms' investments are separeted by market competition and contracts specify a simple (non-contingent) wage payment, investments are constrained efficient. Indeed, workers and firms invest efficiently given the equilibrium matches in which they are involved.