www.hrmars.com/journals 38 International Journal of Academic Research in Accounting, Finance and Management Sciences Volume 2, Issue 2 (2012) ISSN: 2225-8329 An Investigation into the Relation between Personality Traits and Happiness at Work. A Case Study of Qom Province Post Bank Abolfazl GANDOMI Department of Mathematics and Statistics Imam Hussein University of Tehran, Iran E-mail: a_gandomi@yahoo.com Hasan Zarei MATIN Faculty of Management, Qom College University of Tehran, Iran E-mail: matin@ut.ac.ir Hamid ZAREA Faculty of Management, Qom College University of Tehran, Iran E-mail: hzarea@ut.ac.ir Gholamreza JANDAGHI Faculty of Management, Qom College University of Tehran, Iran E-mail: jandaghi@ut.ac.ir Marzieh ALIASGARI Faculty of Management, Qom College University of Tehran, Iran E-mail: marzieh.aliasgari@yahoo.com ABSTRACT The present study is aimed to survey the relation between personality traits and happiness at work among employees of Qom Province Post Bank. Through literature review and surveying different models eleven elements were identified in happiness at work. These elements are learning, openness, positive thinking, meaningfulness of work, Interest in job, structure, flexibility, interaction with colleagues, fairness, security and trust. In addition, a combination of Big Five and Meyers & Briggs’s ŵodel iŶĐludiŶg eight traits (eŵotioŶal staďility, elitisŵ, seŶse of responsibility, compatibility, intuition, emotionalism, extroversion, and perception) was applied. A questionnaire was used for data gathering. Results of t- test showed that flexible structural elements, fairness, security all are at average level. Learning, self-openness, participation, positive thinking, meaningfulness, interest in job, interaction with colleagues, preferred work environment, and happiness were at desired level. Spearman test results showed a significant relation between personality traits and happiness at work with confidence level of 99%. Step by step regression was applied to determine dependent variables and also effect coefficient of dependent variables. Results showed a linear relation between happiness from one hand and elitism and emotionalism from the other hand with error level of 0.05. Results of regression also showed more effective role of elitism on happiness at work in comparison with emotionalism. KEY WORDS happiness, personality traits, extroversion, sense of responsibility, interest to job, security, trust JEL CODES J53, M12