The main purpose of this research was to investigate the structural model of relations of job stress and psycho-social needs with total performance (deviant behaviors, organizational citizenship behaviors, task performance, intention to turnover, and creativity) of employees. The research populations were the employees of a company related to petroleum ministry in Bandarabas City, from among which 187 employees were randomly selected. Research instruments consisted of: needs questionnaire (Yamaguchi, 2003), job stress, intention to quit and task performance questionnaires (Babakas & etal, 2009), deviant behaviors questionnaire (Bennett and Robinson, 2000), creativity questionnaire (Tierney & etal, 1999), and organizational citizenship behaviors questionnaire (Bukhari and Ali, 2009). Data were analyzed with the use of structural equation modeling. Results revealed that there were significant relationships between job stress and psycho-social needs and between psycho-social needs and total performance (p<.05). Also results showed that effects of job stress on total performance are mediated indirectly by psycho-social needs. Mediation analysis supports the mediating role of psycho-social needs in the relation between job stress and total performance. The results of current research revealed that psycho-social needs could be mediate the behavioral tendencies related to job stress.