This study aims at providing an explanation of Electronic Human Resource Management (E-HRM) and introducing its activities and tools. Furthermore, we investigate the effect of various independent variables such as job satisfaction, professional commitment, organizational commitment… on the effectiveness of HRM as a dependent variable. For this purpose, by cluster sampling from Iranian HR managers, 110 of them were chosen to participate in this study. Then, research hypotheses were examined by deploying multiple linear regressions to the data gathered from specially designed questionnaire. Findings indicate that E-HRM tools are rarely used, however, according to the experts’ judgment if they are used, they would have a positive effect on the HRM output in Iranian organization. Finally, a model for assessing the effectiveness of HRM was proposed.