One of the world's successful business , Elon Musk, has said that people need to work from around 80 to over 100 hours per to "change the world". Mr Musk knows what he is talking about he has his finger in many . He is the founder, CEO and lead designer of SpaceX; the co-founder and CEO of the car company Tesla; and the of PayPal. He works very hard on many projects that have changed and could change our lives. He said he is a but he loves what he does. He talked about working hard in an with the technology news website Recode. He said: "There are way places to work, but ever changed the world on 40 hours a week."
It is not just Mr Musk who works . Workers at his companies also put in very hours. Musk said "everyone" at Tesla has worked 100 hours per week at times this . He said this was to make sure the Tesla Model 3 car could survive. He said: "There wasn't some other way to do ." Musk acknowledged that some Tesla employees were with working so hard. He said some workers called the hours "," while others said they prefer to work 70 or more hours per week. Musk said the " level" of working hard increases above 80 hours a week, but he didn't say what the pain was. The CEO of a multi-billion-dollar works around 70 hours a week