The goal of this study was to investigate age differences in emotional experience after a day of work, and the role of emotion-regulation strategy use in shaping emotional experience. Based on the lifespan literature, we predicted that older workers enjoy higher emotional well-being, in particular in terms of higher levels of low-arousal positive emotions and lower levels of high-arousal negative emotions, than young workers. We further predicted that age differences in emotional experience are mediated by a more adaptive profile of habitual emotion-regulation strategy use in older compared to young workers. Multilevel mediation analysis of 832 daily surveys completed by 92 healthcare professionals failed to provide evidence of age differen...