Nina Junker

Job demands can negatively affect sleep. However, previous studies have provided inconclusive results regarding the mediating role of work‐related rumination in this relationship. Integrating prolonged activation theory with the challenge‐hindrance framework, we hypothesized that – on a day level – hindrance demands, but not challenge demands, are negatively associated with sleep quality and sleep duration via work‐related rumination. We tested this assumption in a 14‐day ambulatory assessment study with a sample of employees ( N = 175). As predicted, we found that only hindrance demands, but not challenge demands, are related to sleep quality via work‐related rumination. No relationships with sleep duration were found for any type of job demands.