PARIS – In 1983, the American economist and Nobel laureate Wassily Leontief made what was then a startling prediction. Machines, he said, are likely to replace human labor much in the same way that the tractor replaced the horse. Today, with some 200 million people worldwide out of work – 30 million more than in 2008 – Leontief’s words no longer seem as outlandish as they once did. Indeed, there can be little doubt that technology is in the process of completely transforming the global labor market.
To be sure, predictions like Leontief’s leave many economists skeptical, and for good reason. Historically, increases in productivity have rarely destroyed jobs. Each time that machines yielded gains in efficiency (including when tractors took over from horses), old jobs disappeared, but new jobs were created. Furthermore, economists are number crunchers, and recent data show a slowdown – rather than an acceleration – in productivity gains. When it comes to the actual number of jobs available, there are reasons to question the doomsayers’ dire predictions. Yet there are also reasons to think that the nature of work is changing.
To begin with, as noted by the MIT economist David Autor, advances in the automation of labor transform some jobs more than others. Workers carrying out routine tasks like data processing are increasingly likely to be replaced by machines; but those pursuing more creative endeavors are more likely to experience increases in productivity. Meanwhile, workers providing in-person services might not see their jobs change much at all. In other words, robots might put an accountant out of work, boost a surgeon’s productivity, and leave a hairdresser’s job unaltered.
The resulting upheavals in the structure of the workforce can be at least as important as the actual number of jobs that are affected. Economists call the most likely outcome of this phenomenon “the polarization of employment.” Automation creates service jobs at the bottom end of the wage scale and raises the quantity and profitability of jobs at its top end. But the middle of the labor market becomes hollowed out.