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Greasing or Grinding? Regulatory context and the productivity effects of corruption: Evidence from Vietnamese SMEs

Author

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  • Tomasi, Chiara
  • Le, Quoc Thai
  • Nguyen, Thi Ngoc Lan

Abstract

This paper investigates the heterogeneous effects of bribery on the productivity of small and medium-sized enterprises (SMEs) in Vietnam. Using panel data from the Vietnam Small and Medium Enterprise Survey (VSMES) and an instrumental variable approach to address endogeneity, we find that corruption generally reduces firm productivity. However, its impact varies across institutional contexts: the negative effect is stronger in provinces with efficient regulatory environments and weaker where firms face high bureaucratic burdens or identify government inefficiency as a key constraint. These findings support a weak form of the “grease the wheels” hypothesis, suggesting bribery may act as a costly coping strategy in poorly governed settings. The results highlight the importance of regulatory quality in moderating the effects of corruption and point to the need for reforms that address both corruption and bureaucratic inefficiencies.

Suggested Citation

  • Tomasi, Chiara & Le, Quoc Thai & Nguyen, Thi Ngoc Lan, 2025. "Greasing or Grinding? Regulatory context and the productivity effects of corruption: Evidence from Vietnamese SMEs," European Journal of Political Economy, Elsevier, vol. 89(C).
    • Handle: RePEc:eee:poleco:v:89:y:2025:i:c:s0176268025000874
    DOI: 10.1016/j.ejpoleco.2025.102727
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    Keywords

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    JEL classification:

    • D22 - Microeconomics - - Production and Organizations - - - Firm Behavior: Empirical Analysis
    • D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
    • D73 - Microeconomics - - Analysis of Collective Decision-Making - - - Bureaucracy; Administrative Processes in Public Organizations; Corruption
    • H73 - Public Economics - - State and Local Government; Intergovernmental Relations - - - Interjurisdictional Differentials and Their Effects
    • P31 - Political Economy and Comparative Economic Systems - - Socialist Institutions and Their Transitions - - - Socialist Enterprises and Their Transitions

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