The objective of the study was to measure the relationship between job characteristics and organizational citizenship behavior among banking sector employees. The study was conducted in the banking sector in the city of Peshawar. The research methodology used is quantitative approach and survey for data collection. Through sampling, we generated a sample of 60 respondents belonged to the six different banks. Our results indicate that task significance and autonomy has significant influence on staff OCB; while, results for skills variety, task identity, and feedback turned out to be insignificant. The five dimensions of job characteristic model together explained 27.8% change in the dependent variable of employee OCB. Our results support the previous studies finding that OCB is influenced by job design.