The economic effects of faculty unions

The relationship between faculty salaries and unionism at Ph.D.-level universities is investigated. Unlike previous attempts at analyzing this topic, the model endogenizes the union-nonunion choice using appropriate techniques for analyzing limited dependent variables. These techniques allow computation of average salaries for all schools under the assumption that they are unionized and also under the assumption that they are not unionized. Subtraction of the predicted nonunion salary from the union salary provides an estimate of salary differences, which is corrected for selectivity bias.