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Environmental Inequality: Change in Labor Allocation During PM2.5 Exposure in the Northern Part of Thailand

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  • Mattana Wongsirikajorn

    (Faculty of Economics, Chiang Mai University, Chiang Mai 50200, Thailand)

Abstract

Air pollution from fine particulate matter (PM2.5) is a recurring crisis in Northern Thailand, largely driven by seasonal biomass burning. This study investigates how socioeconomic and individual characteristics shape labor allocation during high-exposure periods. Using survey data from 400 individuals across eight provinces in April–May 2024, we applied a logit model to estimate the probability of reducing work hours. Results show heterogeneous and non-linear patterns of avoidance. The probability of work reduction rose across higher income strata but peaked in the third stratum before declining in the fourth, reflecting the trade-off between avoidance and the opportunity cost of foregone earnings. Education exhibited a strong awareness effect, with each additional year increasing avoidance behavior. Outdoor workers and individuals with respiratory conditions were most likely to reduce work, indicating rational prioritization under greater exposure risks. Together, these findings demonstrate environmental inequality: lower-income and less-educated groups remain disproportionately exposed due to limited coping capacity. The regional context of Northern Thailand further amplifies these vulnerabilities. Policy interventions should prioritize protective measures for vulnerable groups while promoting long-term alternatives to biomass burning. By highlighting nuanced behavioral responses, this study extends evidence on environmental inequality in developing-country contexts.

Suggested Citation

  • Mattana Wongsirikajorn, 2025. "Environmental Inequality: Change in Labor Allocation During PM2.5 Exposure in the Northern Part of Thailand," Sustainability, MDPI, vol. 17(19), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:19:p:8811-:d:1762811
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