Following work on organizational citizenship behaviors (cf. Organ, 1988). the present study examined job satisfaction, perceptions of organizational support, and organizational commitment as predictors of organizational citizenship behaviors. Regression analyses on data collected from workers in a small tooling plant indicated that exchange ideology moderated the relationships between ratings of OCB's and organizational support scores. For tool workers whose attitudes and behaviors were more dependent on organization reinforcement, OCB ratings were positively related to organizational support. However, for those whose attitudes and behaviors were more independent of organization reinforcement. OCB ratings were considerably less related to organizational support scores. The pattern was similar for OCB ratings and job satisfaction scores. These data are consistent with those reported previously (e.g., Eisenberger. Huntington. Hutchinson, & Sowa, 1986) and suggest that the salience of job attitudes in the decision to manifest organizational citizenship behaviors may be influenced by the individual's exchange ideology.