As many as 800 million workers worldwide may lose their jobs to robots and automation by 2030, equivalent to more than a fifth of today’s global labor force.

That’s according to a new report covering 46 nations and more than 800 occupations by the research arm of McKinsey & Co.

The consulting company said Wednesday that both developed and emerging countries will be impacted. Machine operators, fast-food workers and back-office employees are among those who will be most affected if automation spreads quickly through the workplace.

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