The Chinese billionaire and co-founder of the online shopping giant Alibaba has continued to argue for a 9am to 9pm working day, and a six-day week.
Ma’s backing for the so-called “996 system” is being hotly debated in the Chinese media.
Last week, He wrote that without the system, China’s economy was “very likely to lose vitality and impetus”.
The Chinese wealthiest man’s stance was backed by fellow tech entrepreneur Richard Liu, the boss of ecommerce giant JD.com.
On Friday, Ma called the opportunity to work 996 hours a “blessing”.
Liu said years of rapid economic growth in China had boosted the number of “slackers”.
The country has enjoyed economic growth averaging 10% for more than 25 years – from the late 1970s to the mid 2000s – but in subsequent years that has slowed to nearer 6%.
The entrepreneurs’ comments come amid reports this week that JD.com is cutting jobs.
Liu, who started the company that would become JD.com in 1998, recently wrote about his attitude to work, saying he used to set his alarm to wake him up every two hours to make sure he could offer his customers a full, 24-hour, service.