https://aifaultline.com/authors/zaiyan-wei/New papers by Zaiyan Wei in the AI Fault Line guide, and news naming them. https://aifaultline.com/research/p/title-b551925f1997ce2f/https://aifaultline.com/research/p/title-b551925f1997ce2f/Fri, 22 May 2026 00:00:00 +0000Wang, Wei, and Wang build a dynamic posting-level GenAI exposure measure over nationwide U.S. job postings and decompose the aggregate decline in exposure into hiring reallocation across jobs (52% on average) versus within-job task redesign (39.5%), with occupational composition shifts explaining about 90% of the exposure change attributable to observables; senior roles adjust earlier via reallocation while junior roles adjust through a broader mix. The decomposition matters because it shows firms actively reorganize labor demand rather than passively shedding exposed jobs, implying static occupation-level exposure indices misread how the AI shock actually propagates.