In this study, we examine whether occupational future time perspective, developmental proactivity, and cognitive constraints (attention and concentration, planning and organization) are related to successful aging in the workplace. We also test whether occupational future time perspective and developmental proactivity moderate the association between cognitive constraints and successful aging in the workplace. A total of 350 Chinese working adults in Hong Kong (mean = 51.88, standard deviation = 5.15) were recruited in this study. Results suggested that occupational future time perspective, developmental proactivity, and cognitive constraints (planning and organization) were significant predictors of successful aging in the workplace. Results did not support the moderating hypotheses.