卡内基国际和平基金会-Changes-in-Earnings-in-Brazil-Chile-and-Mexico-Disentangling-the-Forces-Behind-Pro-Poor-Change-in-Labor-Markets_32页_339kb

Summary of "Changes in Earnings in Brazil, Chile, and Mexico: Disentangling the Forces Behind Pro-Poor Change in Labour Markets"

Core Content

This working paper examines changes in hourly earnings from the early 1990s to the early 2000s in Brazil, Chile, and Mexico, with a focus on understanding the forces driving pro-poor changes in the labour market. The authors use econometric decomposition techniques to break down earnings changes into three components: changes in workers' characteristics (demographic and socio-occupational), changes in the returns to these characteristics, and changes in unobservable factors.

The study highlights the complex interplay between structural shifts in employment and wage dynamics, and how these affect income distribution. It also underscores the importance of considering both observable and unobservable factors in assessing the impact of economic changes on poverty.

Main Points

• Economic Context: Latin America experienced economic recovery in the 1990s, but high unemployment, informality, and slow wage growth continued to contribute to inequality and poverty.
• Focus on Earnings: The paper focuses on changes in earnings per worker rather than employment changes, as the latter have a smaller impact on income distribution.
• Decomposition Methodology: The authors employ a modified Oaxaca-Blinder decomposition to assess how changes in earnings are influenced by:
  • Changes in workers' characteristics: Such as education, age, gender, and sector of employment.
  • Changes in returns to these characteristics: Reflecting shifts in the value of these characteristics in the labour market.
  • Unobservable factors: Capturing the residual variation in earnings not explained by the first two components.

Key Findings

• Pro-Poor Earnings Changes: Earnings changes generally favoured low-earning workers, especially during periods of positive economic growth, due to improvements in returns to their characteristics.
• Structural Shifts: Changes in the structure of employment (e.g., moving from agriculture to services, increased formalization, and urbanization) had mixed distributional effects. While they often benefited high-earning workers, they also contributed to pro-poor changes in some periods.
• Education: Improvements in the education level of the workforce were a major contributor to rising earnings, particularly in Brazil and Chile. However, the contribution varied over time, likely due to cyclical unemployment patterns.
• Sector Shifts: The shift of workers from low-paying sectors like agriculture to higher-paying sectors like services had a positive impact on earnings, although the effect was smaller than that of education.
• Age Distribution: Changes in the age structure of the workforce, especially the increase in the share of workers aged 25–40, positively contributed to earnings. In contrast, short-term volatility, such as during the Mexican crisis of 1994–1996, could lead to negative contributions.
• Gender and Informality: The increasing presence of women in the workforce and the shift in employment from formal to informal sectors had negative effects on earnings, particularly for women in informal jobs.
• Country-Specific Trends:
  • Brazil: Earnings increased in the early 1990s but declined in the 1996–2004 period. The decline in inequality and poverty was driven by structural changes and unobservable factors.
  • Chile: Earnings changes were relatively small, with a mild pro-poor effect. The stability of the economy and moderate growth contributed to this outcome.
  • Mexico: Earnings were volatile, especially during the 1994–1996 crisis, which had a significant negative impact. The period of economic reform (1992–1994) saw a modest pro-poor effect, but this was offset by later structural changes.

Distributional Effects

• The distributional impact of earnings changes was often more pronounced for low-earning workers, especially when changes in returns and unobservable factors were pro-poor.
• Structural changes, such as shifts in the composition of the workforce, tended to benefit high-earning workers, while changes in returns and unobservable factors were more pro-poor.
• The paper emphasizes that the overall change in earnings is not solely a function of employment trends but also of the evolving returns to workers' characteristics and unobserved market forces.

Conclusion

The study reveals that pro-poor changes in earnings are driven by a combination of structural and market-related factors. While structural shifts in employment may benefit higher earners, changes in returns and unobservable factors are more critical in explaining the pro-poor dynamics of the labour market. These findings highlight the importance of policies that improve education, support formal employment, and address gender disparities in earnings.