VISIT CNBC.COMX Careers CareersJack Ma: This is what to study if you want a high-paying job in the future Marguerite Ward | @forwardist 25 Mins Ago CNBC.com show chapters Jack Ma: In the next 30 years people will work 4 hours a day    5 Hours Ago | 05:42 SHARES Jack Ma, founder of Chinese e-commerce behemoth Alibaba, sees serious change on the horizon....