International Journal of Academic Research in Business and Social Sciences September 2013, Vol. 3, No. 9 ISSN: 2222-6990 534 www.hrmars.com/journals The Relationship between Organizational Citizenship Behavior and Performance of the Staff of Qazvin University of Medical Sciences and Health Services Gholamreza Memarzadeh Tehran Department of Public Management, Qazvin Branch, Islamic Azad University, Qazvin, Iran E-mail: memarzadeh@yahoo.com Masoumeh Sadat Abtahi Department of Humanities, Zanjan branch, Islamic Azad University, Zanjan, Iran E-mail: m_almasi2020@yahoo.com Soheila Esmaeili Department of Public Management, Qazvin Branch, Islamic Azad University, Qazvin, Iran E-mail: Esmaeili.s@yahoo.com DOI: 10.6007/IJARBSS/v3-i9/239 URL: http://dx.doi.org/10.6007/IJARBSS/v3-i9/239 Abstract: More than two decades, the first organ and colleagues of OCB have been expressed through the words. The aim of this study was to investigate the relationship between organizational citizenship behavior and performance of employees of Qazvin University of Medical Sciences and Health Services. The population in this study has included some units to the Qazvin University of Medical Sciences. This study is a descriptive research method will be correlated. In analyzing the data, both descriptive and inferential statistics were used. Descriptive statistics including frequency tables is the mean level of analytic structural equation modeling, confirmatory factor analysis (CFA) and path analysis (Path Analysis) is used. Software used for data analysis software package SPSS version 18 software package LISREL 8.54 version of Windows are. The results show that, in general purpose, due to the OCB altruism, work ethics, sportsmanship and civic behavior has increased the performance. So after, polite and considerate of OCB on employee performance was not affected. So over all research hypothesis is accepted. Keywords: Organizational Citizenship Behavior, Employee Performance Introduction: OCB voluntary is set of behaviors that are not part of the person's official duties. Yet by the duties and functions of the organization are carried out effectively and improve the known (Applebaum et al, 2004).