Categories Articles Elon Musk has been preaching the value of ‘hardcore’ work to employees for over a decade, early Tesla emails show Post author By crystalg Post date November 21, 2022 Business Insider Business Insider Tags 'Preaching, Been, decade, Early, Elon, emails, Employees, hardcore, Musk, Over, Show, Tesla, Value, Work ← Bill Gates Just Said These Are Some Of His Top Five Favorite Books Of All Time → What causes loneliness? Duke study reveals why some people grow more isolated with age