Union presence, union service and membership participation

Much of the literature on the determinants of union activism has focused on biographical and attitudinal precursors or correlates of several measures of union participation. Although interactionist theory emphasizes the importance of social context, little attention has been paid to union presence. The argument of this paper is that union presence, defined by certain structural arrangements, and the quality of union service, influences measures of workplace and non-workplace union participation through the mediating influence of union orientation. The paper begins by reviewing the literature on union presence and participation, before presenting a model of the joint impact of union service and union presence on both on-and off-the job union participation. Data are drawn from a study of membership involvement within the Irish-based Services, Industrial, Professional and Technical Union (SIPTU). The main findings are that there are significant relationships between presence and service level variables and measures of union participation. In particular, service variables appear to affect workplace union participation largely through the mediating influence of union orientation. Presence variables, by contrast, have both direct and indirect influence on participation in union activities within and outside the workplace.