Teachers' job satisfaction leads to job continuity, which in turn affects teacher performance as well as the effectiveness of their institutions. The purpose of this study was to identify if there was a relationship between the Organizational Citizenship Behavior (OCB) and Job Satisfaction (JS) of teachers since discretionary behaviours have a significant impact on performances, yet are not considered in evaluations. Descriptive correlational research was carried out using a multi-stage stratified random sampling technique, where participants came from Higher Education Commission (HEC) recognized public and private sector universities in Lahore, Pakistan. After data cleaning, statistical analyses were applied to the data from 232 questionnaires, using SPSS. Correlations between the factors of organizational citizenship behaviour (altruism, courtesy, sportsmanship, conscientiousness, and civil virtue) and job satisfaction were found to be moderately significantly positive. Job satisfaction through the factors of OCB was determined to be 21.3%, where only altruism and civil virtue were factors. Significant differences were revealed in the OCB and job satisfaction of university teachers in terms of gender, university type, job type, marital status, age groups, academic qualifications, teaching experiences, faculties, and universities. Results of the study provide implications for educational administrators, teachers, and policy makers for incorporating OCBs in their organizations and strengthening factors that contribute toward job satisfaction.