Introduction: Given the identification of human resources` problems in the studies, this research began with the hypothesis of the effect of emotional intelligence on communication ability and environmental perception on the level of employees' performance. Thus, itinvestigated the relationship between the level of emotional intelligence of employees and their level of performance. Methodology: This study was conducted using analytical, survey and statistical methods. The tool needed to collect data on emotional intelligence and performance was a questionnaire completed using survey method. For comparative evaluation, two valid emotional intelligence questionnaires, developed by Bar-On and Goleman, were usedwhose validity and reliability had been proven in previous studies. The localized Goleman and Bar-On Questionnaires, consisting of 33 and 90 questions, respectively, were completed for a sample of 164 people selected from a population of over 250 people. The data on the level of performance of the employees were also distributed through the design of a performance evaluation check list with a reliability of 95.2% with using a 360-degree method by managers, customers, equal-level forces, and subordinates. Data were analyzed using SPSS software for statistical analysis. Cronbach's alpha coefficient was used to measure reliability, Kolmogorov-Smirnovtestwas used to measure the normality of data, hypothesis t and F test was used to examine the relationship between variables and linear regression was used to estimate the relationship between variables. Results: There was a positive and significant relationship between the level of performance of employees and Goleman`s five components. Additionally, the level of performance other than stress control and interpersonal relationships showed a positive and significant relationship with three other components of Bar-On Emotional Intelligence, including general mood, adaptability, and interpersonal relationships. According to the regression analysis, Goleman emotional intelligence explained higher level of total performance level, compared to Bar-On emotional intelligence.