Shares of tech giants Meta and Microsoft were soaring Thursday, with the two companies adding a combined $400 billion to their market values

A recent Microsoft report highlights a growing divide in job security between blue-collar workers and desk-based employees.

As you can see, most of the jobs here are so-called “knowledge economy” jobs—careers that involve learning about, analyzing, and communicating specialized information. On the other hand, the jobs that don’t have much AI applicability are decidedly more blue-collar. They are as follows:

A new Microsoft study ranks the 40 jobs most at risk of being replaced by AI and the 40 roles that are safest for now. Find out if your career is on the list.