The evidence can be found in the data, which shows higher unemployment for workers in business services and a lower one for people who work in manufacturing.

America’s job market increasingly appears to be splitting into two tracks, economists say, alongside a steady demand for skilled workers and a flagging interest in hiring more “knowledge-based” professionals.

The evidence can be found in the data, which shows a higher unemployment rate for professional and business services workers, and a lower one for people who work in manufacturing.

“It’s a buyer’s market for brain and a seller’s market for brawn,” said Aaron Terrazas, chief economist at the jobs and workplace search site Glassdoor.