The purpose of this study is to examine the relationship between opportunity for creativity and organizational citizenship behaviour. The cross sectional survey was conducted with a sample size of 1450 workers drawn from a population of 3768 workers. The scales used were within the acceptable Cronbach Alpha values of 0.7, which was interpreted to be reliable. A total of 1,093 copies of completed and usable questionnaire were used for data analysis. Furthermore, descriptive statistics were computed at the primary level of analysis, while the Spearman Rank Order Coefficient was used at the secondary level of analysis. The results reveal that opportunity for creativity is strongly related to altruism, conscientiousness, civic virtue, courtesy and sportsmanship The findings suggest that organizations conducive for creativity tends to promote extra discretionary employee behaviour