EMPIRICAL ASSESSMENT OF THE IMPACT OF INTERNATIONAL QUALITY STANDARDS ADOPTION ON THE EXPORT PERFORMANCE OF ENTERPRISES
Keywords:
international quality standards, ISO 9001 certification, export performance, GlobalG.A.P., HACCP compliance, export market diversification, propensity score matching, difference-in-differences estimation, enterprise competitiveness, emerging economiesAbstract
The proliferation of non-tariff technical barriers to trade has elevated international quality standards into a decisive instrument of market access for enterprises in emerging and transition economies. This study empirically investigates whether adoption of ISO 9001, ISO 22000, HACCP, and GlobalG.A.P. certification systematically improves export performance of manufacturing and agro-processing enterprises, measured across three dimensions: export volume, market diversification, and operating margin. Using a balanced panel of 320 enterprises observed over five years, the study addresses endogeneity inherent in voluntary certification decisions by combining Propensity Score Matching with a Difference-in-Differences panel regression, isolating the causal treatment effect from self-selection of already more productive firms. Baseline ordinary least squares, fixed-effects, and random-effects estimates are triangulated against post-matching results to test three hypotheses concerning export intensity, diversification, and profitability. Findings indicate that certified enterprises achieve significantly higher export volumes and access a wider range of destination markets than non-certified counterparts, with the strongest gains among firms exporting to the European Union and East Asia. Profitability effects prove heterogeneous: certification yields a positive but statistically weaker margin premium once accreditation and audit costs are netted out, particularly among small and medium-sized enterprises. Heterogeneity analysis reveals that large corporations capture disproportionately larger diversification gains than SMEs, while agro-processing firms benefit more than textile manufacturers. The study concludes that certification functions primarily as a market-access signal rather than an immediate profitability driver, and proposes strategic sequencing of certification, targeted government support, and digital traceability systems as policy instruments to lower compliance burdens for smaller enterprises.
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