The effects of a Total Worker Health intervention on workplace safety: Mediating effects of sleep and supervisor support for sleep.

We tested the effects of a randomized controlled trial Total Worker Health intervention on workplace safety outcomes. The intervention targeted employee sleep at both the supervisor-level (e.g., sleep-specific support training) and employee-level (e.g., sleep tracking and individualized sleep feedback). The intervention components were developed using principles of the Total Worker Health approach and the theory of triadic influence for health behaviors. We hypothesized that employees in the treatment group would report greater safety compliance, safety participation, and safety motivation, and would be less likely to experience a work-related accident or injury following the intervention through improvements in sleep quantity and quality, as well as increased perceptions of supervisors' support for sleep. It was theorized that the indirect effects of the intervention on workplace safety outcomes via sleep mediators operated through a resource pathway, whereas the supervisor support for sleep mediator operated through an exchange pathway. Results broadly revealed that employees in the treatment group, compared to those in the control group, reported greater workplace safety behaviors and safety motivation, and reduced workplace accidents and injuries 9 months post-baseline, through lower dissatisfaction with sleep, reduced sleep-related impairments, and greater supervisor support for sleep 4 months post-baseline. Intervening on sleep and supervisor support for sleep in an integrated Total Worker Health framework can have a positive impact on workplace safety. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Engaging with nature and work: associations among the built and natural environment, experiences outside, and job engagement and creativity.

Introduction: There is substantial evidence that contact with nature is related to positive health and well-being outcomes, but extensions of this research to work-related outcomes is sparse. Some organizations are redesigning workspaces to incorporate nature and adopting nature-related policies, warranting a need for empirical studies that test the influence of nature on employee outcomes. Methods: The present mixed-methods study tests and extends the biophilic work design model to examine associations among the built and natural environment at work and home, experiences of time spent outside (i.e., amount of time outside, enjoyment of time outside, outdoor activities), and motivational work outcomes (i.e., job engagement and creativity). Objective geographic data were combined with quantitative and qualitative survey responses from working adults (N = 803). Results: Our results broadly indicate that individuals who work and live in areas with greater natural amenities (i.e., access to water, topographic variation, temperate climates) spend more time outside and enjoy time outside to a greater degree, and these experiences are in turn associated with greater engagement and creativity at work. We did not find evidence that the surrounding built environment (i.e., urbanity) at work or home was associated with outdoor experiences or work-related outcomes. Additionally, six categories of outdoor activities were identified in the qualitative analyses - leisure activities, relaxation, physical activities, social interactions, tasks and errands, and travel. Discussion: The findings from this study provide evidence that the natural environment, particularly at home, can benefit work-related outcomes via greater time and enjoyment of time outside. This study has implications for employee time use and organizational effectiveness.

The effects of sleep on workplace cognitive failure and safety.

Healthy employee sleep is important for occupational safety, but the mechanisms that explain the relationships among sleep and safety-related behaviors remain unknown. We draw from Crain, Brossoit, and Fisher's (in press) work, nonwork, and sleep (WNS) framework and Barnes' (2012) model of sleep and self-regulation in organizations to investigate the influence of construction workers' self-reported sleep quantity (i.e., duration) and quality (i.e., feeling well-rest upon awakening, ability to fall asleep and remain asleep) on workplace cognitive failures (i.e., lapses in attention, memory, and action at work) and subsequent workplace safety behaviors (i.e., safety compliance and safety participation) and reports of minor injuries. Construction workers from two public works agencies completed surveys at baseline, 6 months, and 12 months. Our results suggest that workers with more insomnia symptoms on average reported engaging in fewer required and voluntary safety behaviors and were at a greater risk for workplace injuries. These effects were mediated by workplace cognitive failures. In addition, workers with greater sleep insufficiency on average reported lower safety compliance, but this effect was not mediated by workplace cognitive failures. These results have implications for future workplace interventions, suggesting that organizations striving to improve safety should prioritize interventions that will reduce workers' insomnia symptoms and improve their ability to quickly fall asleep and stay asleep throughout the night. (PsycINFO Database Record (c) 2019 APA, all rights reserved).