According to these researchers, after 40 years, we would have to work only 3 days a week

Work less to be more efficient? Thats what a study from Keio University in Japan, published in the Melbourne Institute Worker Paper Series, says. To reach these conclusions, the researchers analyzed the behavior of 6,500 workers and examined how their work rate affected their intellectual abilities.

A study done on employee productivity, conducted by a researcher from Keio University, Japan, with Australian researchers from the University of Melbourne, led to an astonishing result: According to researchers, the optimal time to work per week would be 25 hours. After 40 years, our brain would find it more difficult to cash in a full work week. If it has already been proven that work encourages the successful maintenance of the cognitive functions of older workers, this finding would no longer be true beyond 25 hours of work per week.

And this is not a joke, nor a subtle maneuver by local unions, no: researchers are formal, employees are not at the top of their productivity because they work too much!

Work less to produce more

If that makes you dream, tell yourself that it will just have to convince your boss. At the same time, the results are there, tangible and real! You can promise him a turnover increased, boosted growth, an investment of staff in the strengthened company.

Well, after that, you may need to omit a “slight” detail when you talk to him about it: in fact, the results of this study are only valid from a certain age.

In fact, according to the researchers, it is only once we have passed the age of 40 that a reduction in work of about 5 to 3 days a week would allow employees to perform better.

They analyzed the results of cognitive tests (logic, reasoning, memory, perception) among 6,500 individuals over 40 years old. They were able to observe that during a prolonged effort, the cognitive capacities increase over the hours … Then collapse considerably!

It should only work 3 days a week

Thus, almost all people in this age range, the performance decline very quickly after 25 to 30 hours of work according to people. After 30 hours, fatigue and stress rates increase dramatically, which seems to be related to lower performance, parasitizing the mind and preventing 100% effectiveness

“Work can be a double-edged sword because it can stimulate brain activity, but long days can cause fatigue and stress that can potentially damage cognitive function,” says Pr McKenzie, who led study, at Time.

The researchers argue that instead of pushing back the retirement age, we should question the way we work to be more effective. Being more productive does not necessarily mean working “more”, but working “better”. And this applies even more to people at the end of their professional career, who, even if they get tired faster, have valuable knowledge and skills, linked to their many years of practice.

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