Elon Musk says that working remotely is "pretending" to work and has issued an ultimatum to Tesla employees: either work at least 40 hours in person or leave the company.

Another coin, another spin on Elon Musk's merry-go-round. The Tesla boss, who is also the CEO of SpaceX and is close to becoming the Twitter strongman, is again embroiled in a controversy, this time - unsurprisingly - related to human resource management.

In an email that the most "powerful" man in the world reportedly sent to Tesla employees in recent days, under the subject line "remote work is no longer acceptable," Musk wrote that "anyone wishing to work remotely must be in the office for a minimum period - emphasis on minimum - of 40 hours per week or leave Tesla."

"This is less than we are asking of the factory workers," he adds in the missive, to which Bloomberg news agency, quoted by the National Journal had access. In the same statement the multimillionaire stresses that the workplace "should be a main office of Tesla" and not a remote branch unrelated to the functions.

Following the disclosure of the case, a debate was generated on Twitter, the social network that is trying to buy. In response to a user who pointed out that many people consider that going to an office every day is "a backward concept," Elon Musk was categorical: "They should go pretend to work somewhere else.