The Chinese billionaire and co-founder of the online shopping giant Alibaba has continued to claim for a 9am to 9pm working day, and a six-day week.
Jack Ma’s support for the so-called “996 system” is being ardently argued in the Chinese media.
Last week, Mr. Ma wrote that without the system, China’s economy was “very likely to lose energy and motivation”.
His stand was supported by fellow tech entrepreneur Richard Liu, the boss of ecommerce giant JD.com.
Mr. Ma co-founded Alibaba, called China’s eBay, in 1999 and has seen it become one of the world’s biggest internet companies.
The company’s market value is now nearly USD 490 bn (£374bn), and Mr. Ma’s personal wealth is estimated at around USD 40 bn.
Last year, he said that he would step down as executive chairman in the near future.