TRADING UNCERTAINTY, ENFORCEMENT AND LABOR UNIONS

It is shown that when contracts can be perfectly enforced, trading uncertainty leads to discrimination among workers with the same skills and experience. In this case anti-discrimination laws lead to inefficiencies. In the absence of perfect enforcement, anti-discrimination practices may be used as enforcement devices and need not lead to inefficiencies. In particular, firms may wish to precommit to an anti-discrimination policy, say by inviting in a labor union, in order to offer credible insurance to its workers. This leads to an equilibrium in which union workers get a higher wage than non-union workers, but unions do not have monopoly power.