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Professor Chad Sparber releases more research on H-1B visa program

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As debate over immigration policy continues in the nation’s capital and across the country, research by Ӱ professor and two colleagues continues to add to the dialogue.

In 2013, began research showing that an — a program for U.S. companies to bring in skilled immigrants — did not harm U.S. workers or the U.S. economy.

In fact, the research found that “inflows of foreign H-1B workers may explain between 30% and 50% of the aggregate productivity growth… that took place in the US between 1990 and 2010.”

Sparber and his research associates — Giovanni Peri and Kevin Shih, both of the University of California, Davis — continue to study the numbers, and and their impact on the STEM professions:  science, technology, engineering and mathematics.

According to a report in the , the research team found that as immigrants in the STEM professions flocked to a city, the more wages grew for the native-born, college-educated population. Their findings were released this month by the .

“A one percentage point increase in the foreign STEM share of a city’s total employment increased wages of native college-educated labor by about 7-8 percentage points and the wages of non-college educated natives by 3-4 percentage points,” according to the Journal article.

Importantly, their results identify a causal effect of immigration on wages that is distinct from the fact that productive cities will attract more immigrants.

An interactive chart offering a drill-down of the numbers is part of the Journal report. Click on the chart to see how the wages of college-educated students increase in a city with the addition of STEM immigrants with H-1B visas.

Research chart by a team including Chad Sparber was published in the Wall Street Journal.