Daylight Saving: Suggestions To Help Workers Adapt To The Time Change
Spring forward Fall back. We all know the saying to help us remember to adjust our clocks for the daylight saving time changes (this Sunday in case you are wondering). But, what can we do to help workers adjust to the effects of the time change? A few studies have examined these issues but many questions remain on this topic including the best strategies to cope with the time changes. By moving the clocks ahead one hour in the Spring, we lose one hour which shifts work times and other scheduled events one hour earlier. This pushes most people to have a one hour earlier bedtime and wake up time. In the Fall, time moves back one hour. We gain one hour which shifts work times and other scheduled events one hour later thereby pushing most people to have a one hour later bedtime and wake up time. It can take about one week for the body to adjust the new times for sleeping, eating, and activity (Harrision, 2013). Until they have adjusted, people can have trouble falling asleep, staying asleep, and waking up at the right time.
This can lead to sleep deprivation and reduction in performance, increasing the risk for mistakes including vehicle crashes. The reason for these problems is thought to be disruption to circadian rhythms and sleep. Circadian rhythms are daily cycles of numerous hormones and other body functions that prepare us for the expected times for sleeping, eating, and activity. Circadian rhythms have difficulty adjusting to an abrupt one hour time change. Other hazards for workers related to the time change in the Fall include a sudden change in the driving conditions in the late afternoon rush hour- from driving home from work during daylight hours to driving home in darkness. People may not have changed their driving habits to nighttime driving and might be at somewhat higher risk for a vehicle crash. Additionally, the Spring time change leads to more daylight in the evening which may disturb some people鈥檚 sleep. To help reduce risks about one and a half weeks before the time changes in the Fall and Spring, employers can relay these points to help their workers.
Remind workers that several days after the time changes are associated with somewhat higher health and safety risks due to disturbances to circadian rhythms and sleep. It can take one week for the body to adjust sleep times and circadian rhythms to the time change so consider reducing demanding physical and mental tasks as much as possible that week to allow oneself time to adjust. Remind workers to be especially vigilant while driving, at work, and at home to protect themselves since others around them may be sleepier and at risk for making an error that can cause a vehicle crash or other accident. Research found men and people with existing heart disease may be at risk for a heart attack after the time change. Being sleep deprived before the time change will increase the health and safety risks so make it a priority to get enough sleep and be well rested several days before the time change. Does the Time Change Effect Everyone Equally?
Morningness/eveningness tends to change as people age. Teenagers and young adults tend to be 鈥渆vening鈥?types, and researchers theorize this may be due to brain and body development at those ages. Younger workers therefore may have more difficulty adjusting to the Spring time change (Medina et al., 2015). Morningness increases as people age, so older adults tend to be 鈥渕orning鈥?types. As a result, older workers may have more trouble adjusting to the Fall time change. Finally, people who are on the extreme end of the eveningness or the morningness trait may tend to have more trouble adjusting their sleep to the time changes. The online training program 鈥淣IOSH Training for Nurses on Shift Work and Long Work Hours鈥?has many suggestions for coping with various types of work schedules and improving sleep. Although it was designed for nurses, the information is relevant to many occupations. Part 1, Module 2 gives information about sleep and circadian rhythms and Module 4 discusses individual differences. In Part 2, Module 6 gives suggestions for improving sleep. How have you dealt with the time change in the past? Please share your thoughts in the comment section below. Dr. Caruso is a research health scientist in the NIOSH Division of Applied Research and Technology. Circadian typology: a comprehensive review. Minimizing the effect of daylight saving time by adjusting your sleep schedule. The impact of daylight saving time on sleep and related behaviors. Are daylight saving time transitions associated with changes in myocardial infarction incidence? Results from the German MONICA/KORA Myocardial Infarction Registry.
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