Within the next few decades, half of all paid activities in the modern workforce could be automated, according to Michael Chui, a McKinsey Global Institute partner.

"In our research, we tried to lay out scenarios for how technology might evolve, how the price of automation might decline and what the potential results of that could be in terms of what might be automatable," Chui told CNBC's "Squawk Alley" on Tuesday. "Taking all of those factors into account, it will happen fast in micro to a person whose job is affected and a company whose sector is affected, and slow in macro."