This paper explores the relationships among positive and negative work reflection during leisure time, psychological capital, and radical and incremental creativity. We collected data from 500 dyads of employees and their direct supervisors, and employed the structural equation model to test our research hypotheses. The results reveal that positive work reflection during leisure time is positively related to radical and incremental creativity, while negative work reflection during leisure time is negatively related to the two types of creativity. Our findings also suggest that psychological capital mediates the effects of positive and negative work reflection during leisure time on radical and incremental creativity.