INTRODUCTION
The surge in knowledge of OCB has become imperative and progressively a priority for organizations. From the time Katz and Kahn (1966) introduced the concept of positive behaviour, there has been expanded research need toward exploring the nature of such behaviour and its effect on organisational performance (Organ, 1988, Podskakoff et al 2000). This view is supported by Chaitanya and Tripathi (2001) who argue that, it is increasingly realised that employee behaviours that are beyond the traditional measures of job performance, like organizational citizenship behaviour (OCB), hold promise for long-term organizational success. Furthermore, there exists evidence that OCB contributes not only to organizational benefits but also to the individual workerââŽs benefit (Podsakoff et al. 2009). Accordingly, issues regarding the fluid nature of OCB have received considerable attention among organisational behaviourist scientists (Wyss, 2006). For instance, personality traits (Borman, Penner, Allen & Motowidlo, 2001), mood (Miles,
Spector, Borman, & Fox, 2002), employee attitudes ( Organ & Ryan, 1995), leader behaviors (Pillai, Schriesheim, & Williams, 1999) Podsakoff, MacKenzie, Moorman, & Fetter, 1990), employee perceptions of fairness (Niehoff & Moorman, 1993), learning organization (Obiora and Okpu, 2014), task characteristics (Piccolo & Colquitt, 2006) and organizational commitment (Organ & Ryan, 1995) have been shown to have association with OCB.
A growing need therefore has arisen to investigate factors that contribute to -