Associations between burnout symptoms and sleep among workers during the COVID-19 pandemic

•Stress and symptoms of burnout can contribute to sleep disturbances in workers during the COVID-19 pandemic.•Work exhaustion and emotional impairment are related to higher sleep reactivity among employees with critical societal tasks.•Organizations should offer measures that help decrease stress and increase coping to those working in high-stress conditions.•Burnout and insomnia are occupational health challenges that need to be monitored also in the aftermath of the pandemic.