Core self-evaluations (CSE) have been proposed as a static personality trait that influences individuals' work experiences. However, CSE can also be influenced by work experiences. Based on the corresponsive principle of personality development, this study incorporated both dispositional and contextual perspectives to examine longitudinal reciprocal relationships between CSE and job satisfaction. Longitudinal data from 5,827 participants in the British Household Panel Survey from 1997 to 2006 were analyzed. A series of structural equation models revealed that job satisfaction and the growth of job satisfaction in previous years positively predicted CSE in a later year. In turn, CSE contributed to higher job satisfaction and growth of job satisfaction in following years. This result shows that both dispositional and contextual forces interweave to shape individuals' self-views and experiences over time. (Contains 2 footnotes, 2 tables, and 2 figures.)