In the last decade, corporate sustainability has received considerable attention from decision-makers, authorities and investment community, continuing to be the main theme for decades to come. As EPI score provides a basis for effectively comparing the environmental performance of countries, the purpose of this research is to reveal the relationship between Environmental Performance Index (EPI) and GDP growth rate, in order to give another reason to companies from emerging countries to prepare sustainability reports. The research carried out is based on secondary data sources, the data obtained being analyzed using the descriptive statistics, namely tabular and graphical representations. Analysis of the EPI against the GDP growth rate revealed a weak positive correlation over the past decade. Future researchers can investigate the relationship between EPI and GDP growth rates in Romania and the Republic of Moldova. Reasons for the lack of a strong correlation between EPI and GDP growth rates can also be investigated. In addition, the impact of trade on environmental issues in countries such as Romania or the Republic of Moldova can be studied.