A research group led by Tetsuyoshi Shimura, a lecturer at Tokyo Medical University School of Medicine, found that work productivity declines due to the morning-type human beings staying up late and the night-type humans getting up early.
According to the Tokyo Medical University, the research group is engaged in tertiary industries such as government agencies, IT companies, and financial institutions, and responded to 3 people who agreed to cooperate in the research and use the data for research from 2017 to 2019. Analysis, the relationship between sleep schedule and productivity was investigated.
As a result, it was found that late to bed and early rising are related to work productivity.Morning-type humans who slept before 10:6 pm and woke up before 1:0.29 am were found to be XNUMX% less productive after an hour of late sleep.However, in morning-type humans, the delay in wake-up time was not related to productivity, and only the delay in sleep onset affected productivity.
In contrast, night-time humans who slept after 1:9 am and woke up after 1:0.14 am showed a XNUMX% decrease in one hour early rising.Sleep-onset time was not associated with night-time human productivity, only wake-up time.
The decrease in productivity caused by getting up early, which was revealed in this study, is equivalent to 8,000 to 1 yen per year in terms of the average wage of the OECD (Organization for Economic Co-operation and Development).If this amount is converted into a daily amount and converted into the monetary value of the Edo period, it will be roughly three sentences. Although it is said that getting up early is a good thing for Sanbun, the research group needs good sleep to maintain productivity, saying that it can be a loss for Sanbun.
Paper information:[Sleep Medicine] On workdays, earlier sleep for morningness and later wakeup for eveningness are associated with better work productivity
