Why are some union organizing campaigns more successful than others?

This paper reports a study of two union organizing campaigns in the higher education sector. Using mobilization theory, we tried to explore why one campaign was more successful than the other as measured by membership growth and recruitment of activists. We found that in the more successful campaign, the union was perceived as more effective in voicing workers’ concerns, generated greater social cohesion and union identification amongst employees, was more successful in convincing employees that the university management was to blame for their problems and promoted amongst employees a stronger sense of union instrumentality.