According to a new report, close to 800 million global workers will lose their jobs by 2030 and be replaced by robotic automation.

The McKinsey Global Institute study looked at 46 countries and 800 occupations and found that up to one-fifth of the global work force will be affected.

It said one-third of the workforce in richer nations like Germany and here in the US may need to retrain for other jobs. The report went on to say that machine operators and food workers will be hit hardest.