Employees exert emotional effort in order to perform their work effectively, albeit to varying degrees based on their occupation. These emotional job demands (EJDs) affect employees' well-being, yet evidence is mixed as to whether these effects are positive or negative. One limiting factor in extant studies is that they investigated short-term effects or cross-sectional relationships between EJDs (usually assessed at the employee level) and work outcomes. The present study used an accelerated longitudinal design with a 10-year timespan of data (effectively covering the whole working lifespan) to test the effects of EJDs at the occupational level on long-term trajectories of well-being. Drawing on the model of strengths and vulnerabilities integration (SAVI) from the lifespan psychology literature, we tested three competing effects: an experience effect (EJDs predict increased well-being), a vulnerability effect (EJDs predict diminished well-being), and an overload effect (a non-linear relationship in which very high levels lead to more unfavorable trajectories). Using data of N = 2,478 working adults in Germany drawn from the Socioeconomic Panel Study (SOEP), in tandem with data on EJDs from the Occupational Information Network (O*NET), we found an overload effect of EJDs on trajectories of positive affect and job satisfaction. However, EJDs did not influence trajectories of negative affect. We discuss the implications of our findings for theory and practice. (PsycInfo Database Record (c) 2021 APA, all rights reserved).