Minoru Higa2026-03-222026-03-22202510.1017/s1355770x25100272https://doi.org/10.1017/s1355770x25100272https://andeanlibrary.org/handle/123456789/78166Abstract Will rising temperatures from climate change affect labour markets? This paper examines the impact of temperature on hours worked, using panel data from Peru covering the period from 2007 to 2015. We combine information on hours worked from household surveys with weather reanalysis data. Our findings show that high temperatures reduce hours worked, with the effect concentrated in informal jobs rather than in weather-exposed industries. These results suggest that labour market segmentation may shape how climate change affects labour outcomes in developing countries.enClimate changePanel dataEconomicsAffect (linguistics)Market segmentationPeriod (music)Developing countryDemographic economicsLabour economicsarticle