China’s demographic dividend has moved from age-based labor supply to skill-based productivity

21465 6 113469 2 342510 document 113469 gu-et-al-2026-china-s-demographic-dividend-has-moved-from-age-based-labor-supply-to-skill-based-productivity.pdf application/pdf 025a8ab821c913015fdce47c14ef3106 MD5 6661030 2026-04-10 07:10:33 https://pure.iiasa.ac.at/id/eprint/21465/1/gu-et-al-2026-china-s-demographic-dividend-has-moved-from-age-based-labor-supply-to-skill-based-productivity.pdf 21465 1 1 application/pdf text en public cc_by_4

gu-et-al-2026-china-s-demographic-dividend-has-moved-from-age-based-labor-supply-to-skill-based-productivity.pdf

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/113469 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/113469 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/113469 archive 353 disk0/00/02/14/65 2026-04-10 07:12:21 2026-04-10 07:12:21 2026-04-10 07:12:21 article show Gu H. Wu Y. Marois G. Lutz W. 1124 0000-0001-7975-8145 Niu T. China’s demographic dividend has moved from age-based labor supply to skill-based productivity pub POPJUS MDM age support ratio; economic growth; human capital; skill composition Accelerated global population aging challenges conventional economic growth paths. Yet, the mechanisms underlying the transition from the age-based demographic dividend, derived from a favorable age support ratio (ASR), to a skill-based dividend, driven by human capital accumulation, remain insufficiently understood. Using population census data for 336 Chinese cities from 2000 to 2020, we develop a task-based skill ratio (TSR) index to quantify the skill composition of local labor markets, capturing the relative intensity of high- and low-skill tasks within city-level employment structures. We identify a divergence trend where the ASR peaked around 2010 and has since declined, while the TSR has continued to rise and diffuse geographically. We further examine a synergistic effect between ASR and TSR on economic growth and project the compensatory TSR required under alternative demographic scenarios to 2100. It shows that both ASR and TSR positively affect the per capita GDP of a city, but the latter plays a dominant role. A higher ASR amplifies the economic returns to TSR, with the old-age support ratio (OSR) as the binding constraint. Projections indicate that delayed retirement can partly alleviate the effects of the ASR decline, but cannot reverse the long-term trend. Continued improvement in the TSR is therefore necessary to offset this structural demographic shift. Economic growth relies less on favorable age structures and increasingly depends on the skill composition of the workforce, making skill upgrading central to sustained prosperity. 2026-04-14 published National Academy of Sciences doi:10.1073/pnas.2532906123 190 public Proceedings of the National Academy of Sciences 123 15 e2532906123 TRUE 1091-6490 info:eu-repo/semantics/article