Can I make a difference here? The impact of perceived organizational support on volunteer commitment

Purpose The purpose of this paper is to empirically examine the impact of perceived organizational support (POS) on organizational commitment in the voluntary and not-for-profit sector. The study extends the work done so far on the mediating roles of self-expression and perceived influence. Design/methodology/approach This paper reports an empirical research study which examined the impact of POS on organizational commitment in the voluntary and not-for-profit sector. Survey data were collected from a sample of health services workers (n=275) from a large not-for-profit organization. Findings Analyses showed that perception of organizational support positively influenced self-expression. In addition, self-expression mediated the relationship between perception of organizational support and organizational commitment, and both self-expression and perceived influence were statistically significant in their relationship with organizational commitment. Research limitations/implications First, because of the cross-sectional nature of the authors’ design, it is difficult to establish the direction of causality. For example, POS and organizational commitment may be reciprocally related. It is possible that volunteers who are committed may perceive themselves as being valued and contributing members of the organization. Second, the measures used in this study were based on self-report, suggesting therefore that method variance could possibly influence the results. Because the measures reflect individual perceptions, it was not possible to obtain data from sources other the participants. However, preliminary CFA analysis showed that each measure was distinct which should minimize concerns about method variance. Further, some scholars argue that common method variance may be overstated and not as severe as is generally claimed (Lindell and Whitney, 2001). Practical implications Given the need to maintain adequate levels of volunteerism, it is of critical importance for volunteering organizations to understand how to retain their volunteers for the long-term, particularly because volunteer turnover can be very costly in terms of decreased organizational morale, recruitment and training, and decreased ability to effectively serve the public. The authors’ study serves to underscore the fact that those organizations needs to be mindful that volunteers need to perceive adequate organizational support and feel the opportunity for self-expression if those volunteers are to remain committed. Social implications The authors’ study extends the work done so far on the mediating roles of self-expression and perceived influence in the relationship between POS and organizational commitment in voluntary and other not-for-profit organizations. The results suggest that POS positively influenced self-expression but not perception of influence. It also suggests that self-expression mediated the relationship between POS and organizational commitment, and both self-expression and perceived influence are statistically significantly related to organizational commitment. Even though prior research has examined POS as an antecedent, outcome, and a mediator, there is a paucity of research that has examined the proposed model within the context of voluntary and other not-for-profit sectors. Given the current rate of expansion in the voluntary sector, it is the authors’ hope that the present study will provide an impetus for additional research in this area. Originality/value Few studies have examined the impact of POS on self-expression and perceived influence, and the resulting impact on organizational commitment in the voluntary sector. This paper makes a notable contribution to the literature by empirically exploring this understudied relationship.

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