The present article attempts to shed light on the direct and indirect contribution of personal resources and community indices to Sense of Cohesion among activists engaging in community volunteer work. The sample comprised 481 activists. Based on social systems theory, three levels of variables were examined: (1) inputs, which included personal resources (self-esteem, sense of mastery, and sense of coherence); (2) throughputs, which included community indices (organizational commitment, leadership competence, and representation); and (3) outputs, i.e., change in the community which enhances community cohesion. Path analysis revealed interesting results: organizational commitment, representation, and leadership competence fully mediated between self-esteem and community cohesion; and sense of coherence had a direct positive association with organizational commitment. Moreover, sense of mastery and sense of coherence contributed directly to community cohesion. The Discussion presents an analysis of these findings.