On Sept. 21, researchers from Stanford University and King's College London published a paper based on 1.25 billion job postings and 154 million employment records from 41 countries (Jan. 2021–Mar. 2026), finding that AI-adopting firms added more jobs but tilted toward senior staff, with senior roles up 6.7% over five years, entry-level jobs down 3%, the junior share down 1.9 percentage points, and computer/math job share up 0.8 percentage points.