Elon Musk said on Twitter on Twitter that people should work from around 80 to more than 100 hours per week to "change the world."
"There are easier places to work, but nobody changed the world 40 hours a week", Musk He said, referring to the four companies, Tesla, SpaceX, The Boring Company and Neuralink, where he serves as CEO.
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When a Twitter user asked him about the number of hours one needs to work each week to "change the world," Musk responded that it can range from around 80 to over 100.
"It varies according to the person, but approximately 80 remained, reaching a maximum above 100. The level of pain increases exponentially above 80." He said.
Tesla rejected the request for comments from Business Insider. SpaceX and The Boring Company did not respond immediately to requests for comments.
Musk said in an interview with Recode published in November that he worked 120 hours per week, while "everyone" at Tesla worked 100 hours per week at times this year, as Tesla increased the production of his Model 3 sedan. He suggested that the long hours were necessary for Tesla to survive.
"There was no other way to do this," he said.
Tesla employees have described working long hours with Business Insider. Some employees have said that the hours are excessive, while others have said that they prefer to work 70 hours or more per week.
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