Elon Musk said Monday via Twitter that people had to work between 80 and over 100 hours a week to "change the world".
"There are much easier workplaces, but no one has ever changed the world 40 hours a week," Musk said. m said, referring to the four companies – Tesla, SpaceX, The Boring Company and Neuralink – where he holds the position of CEO.
Read more: 70-hour weeks and WTF emails: 42 employees reveal the frenzy of working at Tesla under the "cult" of Elon Musk
When a Twitter user asked him how many hours he had to work each week to "change the world," Musk said he could go from 80 to over 100.
"Varies per person, but about 80 persists, sometimes peaking at over 100. The level of pain increases exponentially above 80," he added. m said.
Tesla declined Business Insider's request for comment. SpaceX and The Boring Company did not immediately respond to requests for comment.
Musk said in an interview with Recode published in November that he was working 120 hours a week while "everyone" from Tesla was working 100 hours a week, this year, as Tesla increased production of its Model sedan 3. He suggested that the long hours were necessary for the survival of Tesla.
"There was no other way to do that," he said.
Tesla employees described working long hours at Business Insider. Some employees said the hours were excessive, while others said they preferred to work 70 hours or more per week.
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