2. Literature Review and Hypothesis Development
In the scientific literature, ESG disclosure is analyzed as a form of non-financial information that complements traditional financial reporting and provides a broader understanding of corporate performance (Christensen, Hail and Leuz, 2021; Rahi, Akter and Johansson, 2022; Kim and Kim, 2024; Ali et al., 2025; da Cunha et al., 2025; Rostamicheri et al., 2026). Moreover, ESG is recognized as "a modern standard of corporate performance" (Ali et al. (2025), based on Alshiban 2022) and "an essential indicator for measuring corporate sustainability on the international stage" (Bai and Kim (2024), based on Burke 2021). In this context, ESG disclosure has evolved into a key mechanism through which companies share relevant non-financial information with investors, regulators (Ali et al. (2025), based on Saini 2022), and other stakeholders. On the one hand, such disclosure enhances transparency and supports stakeholder evaluation of firms' sustainability practices. On the other hand, ESG may generate "benefits for corporations' economic–financial performance" (da Cunha et al., 2025) by demonstrating sustainability commitment, risk management practices, and the ability to create long-term value (Vijaya et al., 2026).
More specifically, ESG disclosures are highly relevant for investors. On the one hand, ESG disclosure reduces information asymmetry between companies and their investors (Christensen, Hail and Leuz, 2021; Chen and Xie, 2022; Saini et al., 2023; Malik and Kashiramka, 2024, based on Carnini Pulino et al., 2022; Ali et al., 2025). In other words, ESG reporting improves financial transparency and helps investors better estimate future performance, thereby reducing uncertainty. As a result, companies with higher levels of ESG disclosure tend to face lower risk expectations and a lower cost of capital (Christensen, Hail and Leuz, 2021; Saini et al., 2023; Malik and Kashiramka, 2024; Ali et al., 2025; Wang et al., 2025; Rostamicheri et al., 2026). On the other hand, ESG disclosure plays an important role in firms’ market performance. Institutional investors increasingly demand higher ESG transparency, as sustainability-related risks directly affect both company performance and investment returns (Ali et al., 2025). In this context, ESG disclosure signals better risk management, higher transparency, and stronger long-term sustainability, which may enhance firm valuation (Khan, 2022; Velte, 2022; da Cunha et al., 2025).
To justify the relationship between ESG disclosure and CFP (CFP), it is necessary to discuss the main theoretical perspectives that underpin it. However, it should be noted that prior studies do not always apply a consistent theoretical framework. As highlighted by Acheampong et al. (2025) a meta-analysis of 154 studies, 38.96% of studies apply a single theory, 36.36% apply multiple theories, and 24.68% do not explicitly rely on any theoretical framework. This suggests that, although ESG–CFP relationships are widely analyzed empirically, their theoretical grounding remains heterogeneous. In this context, the results of the meta-analysis indicate that the most frequently applied theories are stakeholder theory, legitimacy theory, signaling theory, agency theory, and resource dependence theory. This is consistent with the findings of other systematic reviews (Acheampong et al., 2025; Khan, 2022; Saini et al., 2023; Bosi et al., 2022; López et al., 2024; Wang et al., 2025), suggesting that ESG–CFP relationships are inherently multi-theoretical and cannot be fully explained by a single framework. Therefore, a structured discussion of the dominant theories is necessary to explain better the mechanisms through which ESG disclosure may affect firm performance. In this context, the relationship between ESG and CFP is analyzed using the main theoretical frameworks identified in the literature. The ESG literature is primarily grounded in three key theoretical perspectives: stakeholder theory, legitimacy theory, and signaling theory (Saini et al., 2023; Santamaria et al., 2021).
From the perspective of stakeholder theory, for a business to develop sustainably, firms should build and maintain relationships with multiple stakeholder groups, which are defined as “any group or individual who can affect or is affected by the achievement of the organization’s objectives” (Freeman, 1984, p. 46, cited in Elms and Phillips, 2018), rather than focusing solely on shareholders. Since companies must meet the expectations of various stakeholders, these expectations influence their performance. In this context, ESG disclosure serves as a key communication and transparency tool, disseminating relevant non-financial information, reducing uncertainty, and supporting stakeholder decision-making (Malik and Kashiramka, 2024; Ali et al., 2025; Saha and Gopal, 2025; Khan, 2022). Second, by addressing stakeholder expectations, firms can develop intangible resources such as reputation, trust, and stakeholder loyalty (Parashar, Jaiswal and Sharma, 2025; Malik and Kashiramka, 2024; da Cunha et al., 2025; Dossa, 2025). Third, long-term firm success depends on aligning the interests of different stakeholder groups, rather than focusing solely on short-term shareholder value (Ali et al., 2025; Canli and Sercemeli, 2026; Rahi, Akter and Johansson, 2022). Overall, these mechanisms suggest that ESG disclosure can improve firm financial and market performance (Parashar, Jaiswal and Sharma, 2025; Malik and Kashiramka, 2024; da Cunha et al., 2025).
According to Lindblom (1994, cited in Deegan, 2002), legitimacy is „a condition or a status which exists when an entity’s value system is congruent with the value system of the larger social system of which the entity is a part.“ In this sense, legitimacy theory assumes that firms operate within a society’s values and norms (Khan, 2022). To survive and be recognized, firms must align their activities with prevailing social norms and values (Velte, 2022; Ali et al., 2025; Canli and Sercemeli, 2026). In the context of ESG, this theory is grounded in the concept of a “ social contract” (Khan, 2022; Parashar and Jaiswal, 2024), whereby disclosure serves as a strategic tool to secure legitimacy. Through ESG disclosure, firms demonstrate their compliance with environmental, social, and governance expectations and justify their activities to external stakeholders (Khan, 2022; Saini et al., 2023; Parashar, Jaiswal and Sharma, 2025). Moreover, companies disclose non-financial information in response to social and political pressure (Li et al., 2024; Cardillo and Basso, 2025). Overall, these mechanisms suggest that ESG disclosure can contribute to improved CFP by reducing risk (Li et al., 2024), strengthening stakeholder support (Kim and Kim, 2024; Ali et al., 2025; Cardillo and Basso, 2025), and enhancing financial outcomes and firm value (Li et al., 2024; Parashar, Jaiswal and Sharma, 2025).
Signaling theory, originally proposed by Spence (1973), explains how firms use disclosure signals to reduce information asymmetry and communicate otherwise unobservable characteristics to external stakeholders. In the ESG context, disclosed ESG information performs a similar role (Li et al., 2024; Cardillo and Basso, 2025), i.e., „as a signal of environmental commitment“ (Saha and Gopal, 2025). By disclosing ESG information, companies signal (1) strong management quality (Kim and Kim, 2024; Rostamicheri et al., 2026), (2) effective risk management practices (Dossa, 2025), and (3) sufficient resources to invest in sustainability initiatives (Kim and Kim, 2024). In this way, ESG disclosure signals a long-term commitment to sustainable and responsible business activities (Rostamicheri et al., 2026).
Moreover, voluntary sustainability reporting serves as a credible signal that enhances reputation and investor confidence (Rostamicheri et al., 2026) and strengthens a competitive advantage (Kim and Kim, 2024). Ultimately, it contributes to improved financial performance and firm value (Dossa, 2025; Rostamicheri et al., 2026; Kim and Kim, 2024; Dossa, 2025).
Another important theoretical perspective explaining ESG–CFP relationships is the Resource-Based View theory, which suggests that firms achieve competitive advantage through “unique resources and capabilities” (Wernerfelt (1984), cited in Parashar and Jaiswal (2024)). According to Barney, Wright and Ketchen (2001), resources may generate sustained competitive advantage when they „are valuable, rare, imperfectly imitable, and non-substitutable“. In the ESG context, sustainability-related practices may become strategic organizational resources. Such resources can include „green technologies, innovation orientation, human resources, green market orientation, and sustainable supply chains“ (Widyantoro et al., 2025). Because these resources are difficult for competitors to replicate, they may create sustained competitive advantage, (Bhandari, Ranta and Salo, 2022). Consequently, RBV theory suggests that ESG practices can strengthen firms’ competitive position, positively contribute to profitability (Burinskienė, Grybaitė and Lapinskienė, 2025), and support long-term value creation (da Cunha et al., 2025).
Empirical evidence also provides substantial support for a positive relationship between ESG disclosure and CFP. Several meta-analyses suggest that, while the strength of this relationship can vary across contexts, its overall effect is generally positive.
For example, Friede et al. (2015), based on a meta-analysis of more than 2,000 empirical studies, report that the majority of studies identify a positive relationship between ESG and CFP. Similarly, Busch and Friede (2018) find a highly significant, positive, and robust relationship between corporate social and environmental performance and financial performance. More recently, Bai and Kim (2024) report a low but positive overall correlation between ESG and financial performance. Meanwhile, Wang et al. (2025), in a comprehensive review of the literature, conclude that ESG disclosure significantly influences CFP, risk, sustainability, innovation, investment efficiency, and costs. A substantial body of empirical research also reports a positive association between ESG disclosure and financial performance. For example, Chen and Xie (2022), Chung et al. (2024), and Parashar et al. (2024) report that ESG disclosure positively affects firm financial performance. Furthermore, Veeravel et al. (2023) find that ESG disclosure tends to increase firm value in the long term. Overall, these findings provide empirical support for a positive association between ESG disclosure and CFP. Based on these arguments, Hypothesis 1 is formulated:
Hypothesis 1 (H1). Higher levels of ESG disclosure are associated with better corporate financial performance.
It should be noted, however, that empirical evidence on the relationship between ESG disclosure and CFP is mixed.
While many studies document positive effects, others report negative relationships between ESG and CFP. Rahi et al. (2021) identify a negative relationship between ESG practices and several financial performance indicators. In contrast, Giannopoulos et al. (2022) and Dossa (2025) find that certain ESG dimensions, particularly environmental activities and disclosures, may reduce profitability. Similarly, Veeravel et al. (2023) conclude that although ESG disclosures may enhance firm value and performance in the long run, they can negatively affect short-term financial performance. In addition, Rostamicheri et al. (2026) report a negative effect of ESG scores on ROA and ROE in non-Nordic countries, while Cardillo and Basso (2025) argue that selective ESG disclosure may reduce shareholder returns and profitability. Furthermore, a meta-analysis by Atz et al. (2023) indicates that approximately 13% of ESG disclosure studies report negative financial effects. At the same time, some studies report neutral or statistically insignificant relationships between ESG disclosure and CFP (Khan, 2022; Atz et al., 2023; Bai and Kim, 2024)
Overall, the mixed empirical evidence suggests that the relationship between ESG disclosure and CFP may vary across countries and regions. These differences may be explained by variations in institutional environments, which influence both ESG disclosure practices and their economic consequences.
Institutional theory suggests that firms adapt their ESG disclosure practices in response to external institutional pressures, including regulations, market expectations, and societal norms (Dimaggio and Powell, 1983; Li et al., 2024; Cardillo and Basso, 2025). Therefore, the economic relevance of ESG disclosure may differ across institutional and regional contexts. Firms operating in different institutional environments may face varying levels of regulatory, normative, and market pressures related to ESG disclosure. As noted Rostamicheri et al. (2026), such pressures may affect not only organizational legitimacy but also information asymmetry and financing conditions.
Despite a common regulatory framework, ESG disclosure practices remain uneven across WE and CEE countries due to differences in economic development, legal systems, cultural traditions, ethical standards, and historical backgrounds.
The gap between WE and CEE countries is associated with factors related to the socialist legacy, relatively higher corruption levels, and unresolved environmental and social challenges. Moreover, these regional groups differ in their strategic priorities. As noted by Belyaeva, Rudawska and Lopatkova (2020), firms in Western Europe increasingly pursue social and environmental goals alongside financial performance, whereas firms in CEE countries remain more focused on market growth and financial objectives. Based on these arguments, the following hypothesis is formulated:
Hypothesis 2 (H2). The relationship between ESG disclosure and corporate financial performance differs between Western European and CEE countries.
Following the general assumption that ESG–CFP relationships may vary across institutional environments, signaling theory provides an additional explanation for these regional differences.
According to Rostamicheri et al. (2026), ESG performance tends to be more financially relevant in emerging or less mature ESG markets. In contrast, in regions where sustainability standards are already deeply embedded, ESG performance serves primarily a reputational function rather than generating additional financing benefits. Similarly, Cardillo and Basso (2025) argue that ESG performance, combined with high-quality disclosure, may yield stronger financial benefits in institutional environments characterized by regulatory asymmetries and information gaps. Krasodomska (2025) further notes that CEE countries have historically been characterized by lower transparency and greater secrecy than WE countries. Therefore, high-quality ESG disclosure in this region may reduce information asymmetry, strengthen corporate credibility, and increase firms’ attractiveness to investors. In addition, Lohia et al. (2025) found that in countries without mandatory ESG regulations, voluntary ESG disclosure „enables firms to differentiate themselves by demonstrating ESG leadership“, whereas mandatory disclosure requirements may reduce competitive differentiation and weaken the financial impact of ESG reporting. Existing meta-analyses also support these arguments. Friede et al. (2015), in a meta-analysis covering more than 2,000 studies, found that positive ESG effects are more common in emerging markets than in developed markets, noting that „the Emerging Markets sample shows, with 65.4%, a considerably higher share of positive outcomes over developed markets“.
Based on these arguments, the following directional hypothesis related to H2 is formulated, reflecting the stronger signaling effect of ESG disclosure in CEE countries:
Hypothesis 2a (H2a). The positive association between ESG disclosure and corporate financial performance is stronger in CEE countries because ESG disclosure signals more strongly in less developed institutional environments.
Given that the ESG–CFP relationship varies across institutional environments, some literature suggests that ESG disclosure has a stronger positive effect in WE countries due to their more developed regulatory systems, stronger legal enforcement, and more mature capital markets.
According to Burinskienė, Grybaitė and Lapinskienė (2025), in Europe, where sustainability regulations are stricter, and stakeholder expectations are higher, ESG engagement is more strongly associated with „long-term value creation and improved financial outcomes“. The authors also observe that „stricter regulatory frameworks, increased investor confidence, and broader public acceptance of ESG practices“ generate a more favorable environment for businesses. Similarly, Wang et al. (2025) found that ESG disclosure has a statistically significant positive effect on the financial performance of firms in developed countries, whereas this relationship is not statistically significant in developing countries. They argue that stronger regulatory systems and stricter legal requirements in developed countries lead to more standardized, comprehensive, and credible ESG disclosures. Li et al. (2024) Support this argument by emphasizing that developed countries generally have more advanced, standardized ESG disclosure systems. In turn, higher-quality ESG reporting enables managers to meet stakeholders’ information needs better (Velte, 2022), thereby improving risk management and reducing uncertainty. Institutional and signaling theories also support these arguments. Li, Liu and Lin (2025) state that „the institutional environment is more beneficial to ESG signaling in developed markets than in emerging markets“ because firms with better ESG performance gain greater trust and goodwill from investors. As a result, firms have lower signaled costs, investors can assess ESG-related information more effectively, and this contributes to higher firm value.
The importance of developed capital markets is further emphasized in studies focusing on investor behavior and financing conditions. Lohia and Maji (2025) suggest that a developed market-based financial system encourages greater ESG transparency among market participants. They also argue that „the institutional investors' emphasis on sustainability helps corporates use ESGD to draw in investment and deploy capital more effectively, improving financial results“. Similarly, Khan, Serafeim and Yoon (2016) observe that a growing number of investors are committed to integrating ESG information and sustainability issues into their capital allocation and investment decisions. Eliwa, Aboud and Saleh (2021) also find that lending institutions integrate ESG information into their lending decisions, thereby benefiting firms with stronger ESG performance and disclosure by lowering borrowing costs. Empirical evidence from Nordic countries further supports this argument.
Rostamicheri et al. (2026) found that firms with strong ESG performance in Nordic markets are associated with lower financing costs and higher investor confidence. Furthermore, „a 10-point increase in ESG score corresponds to an estimated 4.2-basis-point reduction in WACC“, which reflects the benefits of a more mature ESG environment. Finally, Cardillo and Basso (2025) argue that developed markets are more likely to translate sustainability performance into lower capital costs, stronger valuation effects, and improved risk-adjusted returns, since they face fewer institutional voids and lower political risk.
Based on these arguments, the following directional hypothesis related to H2 is formulated, reflecting the stronger effect of ESG disclosure in more developed institutional environments:
Hypothesis 2b (H2b). The positive association between ESG disclosure and corporate financial performance is stronger in Western European countries, where regulatory systems and capital markets are more developed.