Occupational licensing is sold as consumer protection that screens out incompetent or dangerous workers. Today, about 22 percent of the American workforce needs a government license to do their jobs, and that safety and quality argument is what state and local lawmakers use to justify the entry barriers, licensing fees, and training hours that typically accompany it.
The trouble is that the claimed benefits have historically been difficult to test or measure, so the debate over whether licenses really protect anyone was fueled mostly by anecdotes. That’s why a new NBER working paper by Jonathan Hall, Jason Hicks, Morris M. Kleiner, and Yun taek Oh is so interesting. It leverages Uber data and finds no consistent evidence that a government occupational license improves riders’ ratings or drivers’ behavior on the road. The results suggest that, once a platform is already screening and monitoring its drivers, licensing adds no detectable, additional consumer protection.