Objective: The purpose of this research was to investigate the effect of emotional intelligence on job performance. Methodology: The research method is descriptive and survey type and the statistical population is the employees of Islamic Azad University of Qaemshahr Branch. The number of members of the society was 210 people that by using Cochran's formula, 136 people were randomly selected as samples. The data gathering tool was standard questionnaire for each component of emotional intelligence and job performance style. Results: Data were analyzed using descriptive and inferential level using mean and standard deviation and linear regression methods. Conclusion: The results showed that emotional intelligence and its dimensions (self-awareness, self-regulation, self-motivation, social awareness, and social skills) have a significant effect on job performance.