2013年-世界发展银行全球_Effects_of_Colombias_Social_Protection_System_on_Workers_Choice_between_Formal_and_Informal_Employment_37页_489kb

Summary of "Effects of Colombia's Social Protection System on Workers' Choice between Formal and Informal Employment"

Core Content

This paper investigates the impact of Colombia's expansion of the Subsidized Regime (SR) of public health insurance on workers' choice between formal and informal employment. The study uses two datasets and multiple identification strategies to assess whether the SR created perverse incentives for informality, particularly by reducing the cost of health insurance for informal workers.

Main Findings

• Key Result: The expansion of the SR in the early 1990s is associated with a 4 percentage point increase in informal employment.
• Magnitude of Impact: This corresponds to approximately 8% of the labor force not entering the formal sector and an 11% increase in government health expenditures.
• Robustness: The results are consistent across two different datasets and multiple robustness checks.
• Eligibility and Informality: The increase in informality is concentrated among those eligible for the SR, with an additional 3.0 to 4.2 percentage point increase in informality rates for eligible individuals compared to ineligible ones.

Key Information

• Social Protection System: The SR was introduced in 1993 as part of Law 100, which reformed Colombia's social security system. It provided free or discounted health services to the poor, funded by a 1% transfer from the Contributive Regime (CR) and local/central government funds.
• Informal Employment: Common in Latin America, with an average informality rate of 51% in Colombia between 1990 and 2005. Informal workers often lack labor protections and benefits like health insurance or pensions.
• Health Insurance Costs: The SR reduced health insurance costs for informal workers, potentially encouraging them to move to the informal sector to avoid paying for CR contributions.
• Identification Strategy: The paper exploits variation in the timing of SISBEN interviews across municipalities. SISBEN is a survey used to determine SR eligibility, and its implementation varied by time and location, allowing the researchers to isolate the effect of the SR from other national reforms and macroeconomic shocks.
• Data Sources:
  • Household Survey Data: Repeated cross-sections from the Colombian Household Survey (1990-2005).
  • Panel Data: Constructed from the first and second SISBEN surveys, with two matching methods: ID match and Expanded match.

Methodology

• Model Specification: The paper uses a probit model to estimate the effect of the SR on informality.
• Controls:
  • Municipality and Year Fixed Effects: To account for national-level changes and time-invariant municipal characteristics.
  • Individual, Household, and Labor Market Controls: Including age, education, marital status, employment status, and socio-economic strata.
• Heterogeneous Effects: The paper also examines whether the effect of the SR on informality varies by household characteristics, such as the proportion of potential beneficiaries and vulnerable members.

Context and Significance

• Policy Relevance: The SR was a major expansion of social protection in Colombia, with health insurance coverage rising from below 30% to over 90%.
• Comparative Evidence: The study builds on existing literature examining the effects of social programs on informality in Latin America, including findings from Argentina, Mexico, and Uruguay.
• Policy Implications: The findings suggest that social protection programs can inadvertently encourage informality, especially when they offer free or discounted services to the poor. This highlights the need for careful design to avoid such distortions.

Conclusion

The paper concludes that the expansion of the SR in Colombia likely created incentives for informality, particularly among the poor. The results underscore the importance of understanding the potential unintended consequences of social protection policies and suggest that future reforms should consider these effects to ensure they do not undermine formal employment and labor market stability.

Key Points in List Form

• SR Impact: The SR expansion is associated with a 4 percentage point increase in informal employment.
• Eligibility Effect: The increase is more pronounced among eligible individuals (3.0–4.2 percentage points).
• Data Sources:
  • Household Survey Data (1990–2005)
  • Panel Data from first and second SISBEN surveys
• Identification Strategy: Uses variation in SISBEN interview timing across municipalities to isolate the SR effect.
• Control Variables: Includes individual, household, and labor market controls to ensure robustness.
• Demographics: Informal workers are less educated and more likely to be single compared to formal workers.
• Policy Implications: Highlights the potential for social protection programs to distort labor market choices.

References and Context

• The SR was introduced in 1993 as part of Law 100, which reformed the social security system.
• The SISBEN is a poverty assessment tool used to determine eligibility for the SR.
• The study contributes to the broader understanding of social protection and informality in Latin America.
• The findings are relevant for policy design in countries expanding social programs to the poor.