Certification of Portuguese companies as an inducer of profitability: A panel data approach

With the globalization and internationalization of markets, companies need to be more competitive offer high-quality guarantees consumers, suppliers, banking institutions, shareholders. Thus, objective this paper is measure impacts that these guarantees, analyzed through quality management, environmental management occupational health safety standards, will have on return assets (ROA) classified by sector activity, considering each certifications individually as a whole. The panel data approach methodology was used for 10 years in Portuguese-certified between 2010 2019. Chow test, Breusch-Pagan, Hausman test were applied identify feasible model pooled OLS random or fixed effects model. Furthermore, cluster-robust standard errors applied.The results show existence synergies when adopting than one certification improve firm performance. Moreover, single estimate are significant can positive drivers profitability, but only manufacturing industries related natural resources. However, they trigger negative accommodation, catering, information communication sectors. AcknowledgmentThis funded National Funds FCT – Foundation Science Technology, I.P., within scope project Refª UIDB/05583/2020. we would like thank Research Centre Digital Services (CISeD) Instituto Politécnico de Viseu, their support.