Jan A. Häusser

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.

Over the past 3 years, employees have constantly witnessed how their organizations have responded to the challenges posed by the COVID‐19 pandemic. Here, we hypothesize that employees' perceptions of the COVID‐19 safety climate of their organization positively affect their vaccine readiness. To examine the underlying mechanisms of this effect, we use a self‐perception theory lens. Thus, we hypothesize that an organization's COVID‐19 safety climate affects employees' COVID‐19 vaccine readiness through employees' adherence to COVID‐19 guidelines. We conducted a time‐lagged study over the time span of 1 year ( N = 351) to test our hypotheses. In general, results support our hypotheses. In particular, results showed that perceived COVID‐19 safety climate assessed at an early stage of the pandemic (April 2020, when no vaccines were available) predicted employees' COVID‐19 vaccine readiness more than a year later. In line with self‐perception theory, this effect was mediated by employees' adherence to COVID‐19 guidelines. The present study provides theoretical insight into the underlying mechanisms of organizational climate on employees' attitudes. From a practical perspective, our results suggest that organizations are a powerful lever for promoting vaccine readiness.