The effect of unions on professors' salaries: The evidence over twenty years

No study has recently examined how unions affect professors' salaries. In the only studies using micro-level data, both Ashraf(1992) and Barbezat (1989) used data from 1977. I update earlier work by using data from 1988. In conjunction with data from 1969 and 1977, the effect of faculty unions over a twenty-year period is examined. While faculty at unionized colleges earned significantly less than their counterparts at nonunion institutions in 1969, they earned marginally more in 1977 and 1988.