The purpose of this study is to explore the drivers of job satisfaction among IT workers in the East Asian context, particularly in Taiwan, Japan, and China. Using data collected from IT workers, decision tree analysis was employed to identify the predictors of job satisfaction. Results indicate that the level of education has no effect on job satisfaction. In Taiwan and Japan, higher uncertainty avoidance results in higher job satisfaction, and more experienced IT workers appear to be less satisfied. As Taiwanese and Japanese IT workers get older, they are likely to hold senior positions, spend more time on the job, and become increasingly dissatisfied with their jobs. The effect of uncertainty avoidance is less clear in China. The job role and industry matter only in China. Thus, management efforts to enhance job satisfaction among IT workers in China may be tailored towards specific industries and job roles.