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The advance of technology is the biggest reason workers are earning a shrinking slice of the income pie, according to a new study by the International Monetary Fund.

Labor’s share of national income declined in 29 of the world’s 50 biggest economies between 1991 and 2014, according to the IMF study released April 10.

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Analysis suggests “technology is the largest contributor to the change in labor shares in the large majority of countries,” the report indicated.

The second main component of income is capital. When wages grow more slowly than productivity, labor’s share of income falls as the owners of capital reap gains at a quicker pace. That often worsens income inequality because capital tends to be concentrated in the hands of a few, the IMF wrote in a blog accompanying the research.

The IMF’s finding is significant because economists have been debating what’s to blame for decades of sluggish wage growth. President Donald Trump has blamed trade with countries such as China and Mexico for hurting American workers and hollowing out the nation’s manufacturing sector. The IMF study suggests technology is a bigger driver.

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About half the decline in national labor shares can be traced to the impact of technology, according to the study, which is part of the World Economic Outlook. The full outlook, including the fund’s forecasts for global growth, will be released April 18 in Washington.

The study notes the rapid advance of information and communications technology has accelerated the automation of routine tasks, causing firms to substitute capital for workers.

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By Andrew Mayeda
Bloomberg News

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