Elon Musk’s business empire has been hit by a wave of senior departures over the past year, as the billionaire’s relentless demands and political activism accelerate turnover among his top ranks. Key members of Tesla’s US sales team, battery and power-train operations, public affairs arm, and its chief information officer have all recently departed, as well as core members of the Optimus robot and AI teams on which Musk has bet the future of the company. Churn has been even more rapid at xAI, Musk’s two-year-old artificial intelligence start-up, which he merged with his social network X in March. Its chief financial officer and general counsel recently departed after short stints, within a week of each other. The moves are part of an exodus from the conglomerate of the world’s richest man, as he juggles five companies from SpaceX to Tesla with more than 140,000 employees. The Financial Times spoke to more than a dozen current and former employees to gain an insight into the tumult. While many left happily after long service to found start-ups or take career breaks, there has also been an uptick in those quitting from burnout, or disillusionment with Musk’s strategic pivots, mass lay-offs and his politics, the people said. “The one constant in Elon’s world is how quickly he burns through deputies,” said one of the billionaire’s advisers. “Even the board jokes, there’s time and then there’s ‘Tesla time.’ It’s a 24/7 campaign-style work ethos. Not everyone is cut out for that.” Robert Keele, xAI’s general counsel, ended his 16-month tenure in early August by posting an AI-generated video of a suited lawyer screaming while shoveling molten coal. “I love my two toddlers and I don’t get to see them enough,” he commented. Mike Liberatore lasted three months as xAI chief financial officer before defecting to Musk’s arch-rival Sam Altman at OpenAI. “102 days—7 days per week in the office; 120+ hours per week; I love working hard,” he said on LinkedIn.