Purpose: The purpose of this research is to measure the degree of job stress and job burnout in the Post Company and identify the relationship between job stress and job burnout. Design/Methodology/Approach: The paper presents an overview of the concept of job stress and job burnout. The research is descriptive, analytical and crosssectional. It was conducted on 200 employees of the Post Company of I.R. Iran in 2010 using Osipow job stress questionnaire and Geldard job burnout questionnaire; a demographic questionnaire was also developed. Osipow job stress questionnaire consisted of six stress-inducing work roles including role overload, role insufficiency, role ambiguity, role boundary, responsibility and physical environment. The sample size is 200. Findings: The amount of job stress was normal (194.20) in the sample, and job burnout had a moderate level (194.42). The research showed that the correlation between the job stress of the Post personnel, and their job burnout in the sample was meaningful (r= 0.58) in a level of P<0.0001. Moreover job stress and job burnout had no meaningful relation to demographic specifications such as age, managerial record, sex, and education, and income. The results of the study confirmed direct and meaningful relation between job stress and job burnout. In addition to that, the highest job stress relates to role overload and the lowest belonged to physical environment. Originality/ Value: The research measures the degree of job satisfaction and job burnout in the Post Company of I.R. Iran for the first time. The research is significant in that Elkin and Rosch (1990) estimated that in 1990, 54% of 550 million working days lost annually, could be attributed to stress.

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