“…In contrast to the formulation of hypothesis 1 which supports direct effect, previous studies also reported an indirect effect between SL and OCB (Zehir et al, 2013;Newman et al, 2015;Hunter et al, 2013). The effect of SL on OCB is reported to be mediated by a number of variables including organizational justice (Zehir et al, 2013), LMX (Wu et al, 2013), and service climate (Hunter et al, 2013). In addition, Dulebohn et al (2012) revealed that the view that the behavior of leaders directly effects OCB is an old leadership approach.…”