Аннотация:Satisfaction of the basic psychological needs for autonomy, competence and relatedness is associated with higher well-being. However, little is known about change or stability in this association over the life span. We therefore investigated changes in the association between well-being and basic psychological need satisfaction in the retirement transition. Data was drawn from four waves of the Health, Aging, and Retirement Transitions in Sweden (HEARTS) study (N = 5,074, M (age) = 63.16; 53.61% female). Multi-level models were conducted and the analyses revealed evidence for continuity as well as systematic changes in within- and between-person associations across the retirement transition. Our findings demonstrate the benefits of applying a longitudinal design and a life span perspective on basic psychological need satisfaction.