“…According to Gould & Hawkins (1978), Hawthorne studies, which associated employee productivity with satisfaction level, can be indicated to clarify the relationship between job satisfaction and job performance (Hsieh, 2016, p. 93). This relationship is highlighted in several studies (Miao, 2011;Özpehlivan, 2015;Kale, 2015;Güngören, 2017;Wu et al, 2017) and as Landy (1989) implied, it is identified as the "Holy Grail" of organizational and industrial psychology (Bowling, 2007, p. 167). Burke (2003) argue that employees will have a positive psychological mood as a result of high level of POS and job satisfaction; Grandey (1997) adds that they become more willing to contribute to the organization (Akkoç et al, 2012, p. 113).…”