In the present study the effect of emotional intelligence program on organizational maturity and job burn-out in Mapna Companys Staff in Paresar combined Cycle Power Plant has been investigated. In the present study, firstly the population of 300 people were randomly selected from among all working staff in Mapna Companys Staff in Paresar combined Cycle Power Plant and were evaluated through the test of organizational maturity and job burn-out, the sample population containing 40 staff members from among those having low organizational maturity and high job burn-out were randomly selected and were located in two 20 people groups. One of the groups was randomly exposed to training emotional intelligence for 3 months and the second group received placebo. At the end both mentioned groups were evaluated through related test (organizational maturity, job burn-out). The results were analyzed through SPSS. The research is experimental two group pretest and posttest. The analyses was conducted through MANCOVA and revealed that training emotional intelligence affected on the increase of organizational maturity and decrease of job burn-out. Training emotional intelligence improved organizational maturity and decreased job burn-out. Key Words: Training the Variables of Emotional Intelligence, Organizational Maturity, and Job Burn-out.