CMU and Oxford study ties Uber and Lyft city entry to higher GDP and intermittent jobs

A Nature Cities study from Carnegie Mellon University and Oxford Said Business School finds that after Uber and Lyft entered U.S. metro areas, regional GDP per capita rose and seasonal, temporary, or intermittent jobs increased. Researchers analyzed launches across 167 metropolitan areas between 2010 and 2019, using staggered entry and difference-in-differences methods on public workforce and economic data. They did not observe statistically significant effects on overall employment or wages. Jeremy Michalek, a CMU professor of engineering and public policy and mechanical engineering, said the results corroborate some company claims that the platforms boosted intermittent employment and economic output. The team reported no meaningful pretrends in employment or wage growth that would suggest the apps simply chose cities already rising. Michalek said the entry evidence points to measurable local economic effects alongside known impacts on taxis, congestion, and other urban outcomes. The paper lists DOI 10.1038/s44284-026-00478-0.