ABSTRACT
Job satisfaction is the most important variable in the field of organizational behavior and is associated with several factors. Psychological capital and personality characteristics of job satisfaction are the main factors. The aim of this study was to assess the relationship between psychological capital and personality traits with job satisfaction among libraries in public libraries in Tabriz. The research method was descriptive-correlative. Statistical population of this study included all librarians of public libraries who were working in Tabriz in 2011. The sample size was calculated by Cochran formula; the 150 cases were selected by simple random sampling. Psychological Capital Questionnaires, NEO Personality Inventory and Job Satisfaction Survey were used to collect data. Data were analyzed by the Pearson correlation and stepwise regression analysis. Results indicated that psychological capital and its components have positive and significant relations with job satisfaction. Also the personality traits of extroversion, agreement, and conscientious had positive and significant relations, while personality traits of neuroticism, and open to experience had negative and significant relations with job satisfaction. On the other hand, regression analysis showed that self-efficacy, neuroticism, open to experience, conscientious, and psychological capital can predict the variance in job satisfaction. Based on the results of this study, it is suggested to consider psychological capital and personality traits of candidates when employing qualified employees