“…Result of this research showed that it was necessary for organizational commitment within an organization to improve its performance and the organizational commitment was significantly related with OCB. For example, Salehi and Gholtash (2011) in Iran showed that variable of organizational commitment had a positive effect on the OCB. Also, a review of the previous studies such as Meyer and Allen (1990), Ensher et al (2001), Gautam et al (2005), Haigh and Pfau (2006), Liu (2009), Lavelle et al (2009), Ng and Feldman (2011, Morin et al (2011), Chen andKao (2012), and Islam et al (2012) indicates that positive OCB is effective on organizational commitment.…”