Results of a survey on unions representing clerical workers at the largest public and private U.S. universities are summarized. The incidence of strike activity among these unions and the degree of organizing activity in universities where clerical workers are not represented by unions were determined. It was found that most of the unionization of university clerical employees has taken place since 1970, and the amount of organizing activity has increased steadily over the past 15 years. Unions have been successful, achieving bargaining rights on some 70% of the campuses where formal organizing campaigns have been initiated. Clerical unions appear to be more firmly established at public institutions than at private institutions, with two-year colleges more likely to be unionized than four-year colleges. Data are provided on the number of union/non-union public and private institutions by region and level (two-year/four-year). For 13 large college and university clerical unions, information is presented on strike activity since 1970 by year, length of the strike, and the bargaining agent. For 65 universities, information is provided on the bargaining agent, level, certification year, unit size, and the percent of the bargaining unit that is clerical. (SW)