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Purpose: The purpose of this study was to investigate the relationships among self-efficacy, collective efficacy,job satisfaction, and organizational commitment of nurses working in general hospitals. Methods: Data were collectedfrom 239 nurses working in five general hospitals of a local area by self-reported questionnaires. The collecteddata were analyzed with descriptive statistics, t-test, ANOVA, Pearson’s correlation, and stepwise multipleregression by using SPSS/WIN 18.0. Results: Self-efficacy, collective efficacy, job satisfaction, and organizationalcommitment showed significantly positive correlations. Self-efficacy was the main factor of affecting job satisfaction,which explained 14.3% of the variance for the nurses’ job satisfaction together with collective efficacy andweekly working time. In addition, the primary factor of affecting organization commitment was self-efficacy, whichaccounted for 17.2% of the variance for the nurses’ organizational commitment together with hospital size andshift work. Conclusion: Self-efficacy and nursing working condition such as working time or hospital size contributedto the job satisfaction and organizational commitment and collective efficacy contributed to the jobsatisfaction. Therefore, the strategies for improving self and collective efficacy should be considered. Further studyis also needed to investigate the concept of collective efficacy and its’ measurement, and the relationship betweencollective efficacy and organizational commitment.