BEYOND THE CALL OF DUTY - A FIELD-STUDY OF EXTRA-ROLE BEHAVIOR IN VOLUNTARY ORGANIZATIONS

The present study investigated factors influencing voluntary organization members' engaging in a specific extra-role behavior, participation in a telethon, on behalf of their organizations. Affective organizational commitment was hypothesized to mediate the relationship between intrinsic satisfaction and the voluntarism criterion, and organization purpose (service vs. non-service) and organization membership size were hypothesized to moderate the relationship between commitment and voluntarism. PROBIT regression analyses indicated that affective commitment explained the voluntarism effects of intrinsic satisfaction. The effect of commitment on voluntarism was found to occur only among service organizations. Although it did not moderate the effect of commitment, size was negatively related to voluntarism. © 1991, Sage Publications. All rights reserved.