A working paper by Seyed Mahdi Hosseini Maasoum and Guy Lichtinger, drawing on 62 million US worker resumes across 285,000 firms, found that entry-level job postings fell 15% in firms adopting AI tools 1. Senior roles remained flat. The decline is driven by slower hiring, not increased firing. Companies are not sacking juniors. They are simply not replacing them.
This confirms the Federal Reserve Bank of Dallas finding that employment losses concentrate among workers under 25 through collapsed job-finding rates . In three to five years, the juniors never hired will not exist as mid-career professionals. Companies consuming this seed corn face a structural senior talent shortage they are not accounting for.
