Roughly 15–20% of the global workforce works non-traditional hours — night shifts, early shifts, rotating schedules. The health effects of long-term shift work are well documented.
Health impacts of shift work: • Sleep deficiency: Daytime sleep is substantially less efficient than nighttime sleep — even at the same duration, deep sleep and REM proportions are reduced • Metabolic risk: Chronic circadian misalignment is linked to higher rates of type 2 diabetes, obesity, and metabolic syndrome • Cardiovascular risk: Long-term shift work is associated with elevated risk of heart disease and hypertension • Accident risk: Shift workers are more prone to errors and accidents at work, especially during the commute home after a night shift • Mental health: Higher rates of depression and anxiety compared to standard-hours workers
Sleep recommendations for night shift workers:
Sleep timing: • Sleep as soon as possible after the shift — don't wait until the afternoon (the later in the day you sleep, the lower the sleep quality) • If immediate sleep isn't possible, take a 2-hour nap first and top up in the evening
Light management (the key strategy): • Wear blue-light-blocking glasses on the commute home to prevent morning light from resetting your body clock • Use blackout curtains during daytime sleep to simulate nighttime conditions • Use bright lights or a light therapy lamp during the night shift to maintain alertness
Social and household support: • Let family members or housemates know your sleep schedule to avoid disturbances • Set your phone to Do Not Disturb mode during daytime sleep
Transitioning between shifts: • Start gradually adjusting your sleep timing 2–3 days before a shift change rather than switching all at once • Ensure adequate rest days between different shift rotations