Organizational citizenship behaviour

Employee engagement and organizational citizenship behaviour (OCB) have emerged as central constructs in organizational psychology and human resource management. Both phenomena significantly influence employee motivation, performance, and organizational effectiveness. This paper provides a comprehensive literature review exploring the conceptual foundations, dimensions, determinants, and interrelationship between employee engagement and OCB, with a particular focus on public-sector employees at the local government level. Drawing on foundational and contemporary scholarship, the review underscores that employee engagement—defined as a positive, fulfilling, work-related psychological state encompassing vigor, dedication, and absorption—serves as a critical antecedent to discretionary behaviours that characterize OCB. The paper further discusses mediating factors such as organizational support and moderating variables like job satisfaction, highlighting their influence on the engagement– OCB nexus. Finally, a conceptual framework is proposed to guide future empirical studies. Keywords: Employee engagement, organizational citizenship behaviour, organizational support, job satisfaction, public sector, Nigeria