Work e-mail after hours and off-job duration and their association with psychological detachment, actigraphic sleep, and saliva cortisol: A 1-month observational study for information technology employees

• Tomohide KuboNational Institute of Occupational Safety and Health
• Shuhei IzawaNational Institute of Occupational Safety and Health
• Hiroki IkedaNational Institute of Occupational Safety and Health
• Masao TsuchiyaAdvantage Risk Management Co., Ltd. (Japan)
• Keiichi MikiNational Institute of Occupational Safety and Health
• Masaya TakahashiNational Institute of Occupational Safety and Health