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Call for Papers: PIER Research Workshop 2025
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Year
2025
2024
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2022
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5 January 2023
20231672876800000
No. 196

Climbing the Economic Ladder: Earnings Inequality and Intragenerational Mobility among Thai Formal Workers

Abstract

This paper investigates inequality and intragenerational economic mobility among formal workers in a developing country with large inequality. Understanding economic mobility is important because it shapes our perception of inequality. Despite its significance, evidence on intragenerational mobility, especially that based on administrative data, is relatively limited in developing countries. Using Thailand’s tax return data, we study the evolution of earnings inequality, estimate medium-term earnings mobility, and examine the heterogeneity of mobility across age, gender and employment arrangement. Our analysis yields three main findings. First, annual earnings inequality rises during the 2009–2018 period. We find that the inequality is largely permanent, and its increase is primarily driven by top-earnings workers. Second, medium-term mobility tends to be limited at both ends of the earnings distribution, with particularly pronounced persistence observed at the top decile. Our suggestive comparison indicates that Thailand’s earnings mobility is among the lowest in the pool of evidence from both developed and developing countries. Third, there is a considerable heterogeneity in mobility regarding employment arrangement. Workers in less-formal jobs have much lower upward mobility than those in more-formal employment. Our findings also indicate significant heterogeneity in mobility with respect to gender and age.

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JEL: D31D63H20J31J60
Tags: intragenerational earnings mobilityinequality
The views expressed in this workshop do not necessarily reflect the views of the Puey Ungphakorn Institute for Economic Research or the Bank of Thailand.
Athiphat Muthitacharoen
Athiphat Muthitacharoen
Chulalongkorn University
Trongwut Burong
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