"Although union mergers have occurred since the earliest stages of unionization, few attempts have been made to uncover the psychological effects of merger on member attitudes and behaviour. The literature suggests that the intended results of a merger (e.g. economies of scale, reduced jurisdictional disputes) can be accompanied by unintended consequences, such as lowered degrees of union commitment and membership participation. This study examined the effects of a union merger on members' attitudes and participation in union activity using questionnaires. Baseline data from two merging unions and a comparison union were collected a year prior to the merger, and longitudinal follow-up surveys were administered twice. The results suggest that membership commitment, satisfaction and participation do not necessarily have to be sacrificed for the bene.t of building larger, more stable and powerful unions through mergers."

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