The Leverage Effect of Governance Reform: How Audit Committee Chairs Determine the Quality of ESG Disclosure

Governance Reform’s Leverage Effect: How Audit Committee Chairs Determine the Caliber of ESG Disclosure

The quality of ESG disclosure rarely depends on the professional competence of the reporting team. The real constraints are more often hidden in a place further back—in the boardroom, where the question is who ultimately bears final responsibility for the integrity of that report.

This judgment does not come from intuition, but from verifiable evidence. A study published in *Humanities and Social Sciences Communications*, using a sample of 243 firm-year observations from Saudi Arabia between 2014 and 2023 and employing a fixed effects regression model, examined how the personal and positional attributes of the Audit Committee Chair (ACC) affect a company’s ESG disclosure quality, and further investigated how the corporate governance reforms implemented in 2017 under the “Vision 2030” framework moderate this relationship.

The conclusions are not complicated, but they point clearly: independent and experienced audit committee chairs significantly improve ESG disclosure levels, while interlocking directorships negatively affect transparency. When governance reform is introduced as a moderating variable, the positive effects of independence and professional experience are amplified, and the negative effect of interlocking directorships is suppressed.

The significance of these findings extends far beyond Saudi Arabia. They touch on a global business logic that is being repriced: as ESG shifts from “voluntary expression” to “institutional constraint,” the marginal value of governance structures is rising.

I. The Misunderstood ESG Bottleneck: The Problem Is Not at the Reporting End

Over the past decade, the mainstream corporate response to ESG has been to add departments, expand teams, bring in consultants, and upgrade disclosure templates. The implicit assumption behind this approach is that disclosure quality is a technical problem that can be solved with sufficient professional expertise and process control.

But a growing body of evidence shows that this assumption does not hold. Disclosure quality is essentially a governance issue. It depends on how information is filtered, challenged, and verified within the organization, and the ultimate arbiter of this process is the specialized committee under the board.

Among all committees, the audit committee has the most distinctive position. It is neither the main body for strategy formulation nor a link in business execution, but the “gatekeeper” of financial and non-financial information. As ESG reporting is gradually brought into the audit committee’s oversight purview, this role’s boundaries of authority and responsibility are expanding. As the committee’s leadership core, the chair sets the agenda, determines the depth of questioning, and calibrates the degree of confrontation with management; their personal traits therefore cease to be background variables and become preconditions for disclosure quality.The study adopts multiple theoretical perspectives to explain this mechanism: agency theory emphasizes that an independent committee can curb management's opportunistic behavior and reduce information asymmetry; stakeholder theory requires the committee to seek a balance among investors, regulators, employees, and the public; legitimacy theory points out that institutional pressure drives firms to move closer to mainstream disclosure norms; and the resource-based view and resource dependence theory regard the chair's professional experience and social networks as strategic resources of the firm. The theoretical frameworks differ, but they all point to the same conclusion: the audit committee chair is not a procedural role, but a substantive determinant of disclosure quality.

II. Three Attributes, Three Directions

The three attributes on which the study focuses precisely constitute three axes for understanding governance effectiveness.

Independence is the first axis. An independent audit committee chair is not constrained by employment relationships or business dealings with management and can raise questions at a lower psychological cost. On ESG issues, this is especially critical: methods for measuring environmental and social information are highly non-standardized, and management has considerable discretion in boundary judgments. Independence therefore becomes the first line of defense against "selective disclosure."

Professional experience is the second axis. ESG disclosure involves cross-domain content such as carbon emissions accounting, supply chain human rights due diligence, and governance structure disclosure. A chair lacking relevant experience finds it difficult to identify substantive gaps in these areas. The value of experience lies not in formal credentials, but in the ability to judge, under incomplete information, what should be questioned and which explanations do not hold.

Interlocking directorships is the third axis, and the one whose direction is most counterintuitive. Simultaneously serving as a director of multiple companies is usually seen as a manifestation of personal prestige and network capital, but with respect to disclosure quality, research shows that it has a negative impact.

The three axes operate in different directions, indicating that governance quality cannot be reduced to univariate judgments such as "more independent is better." What truly determines the caliber of disclosure is the combinatorial structure among these attributes.

III. Why Interlocking Directorships Are a Negative Asset for Transparency

To understand interlocking directorships as a negative asset, one must first strip away the intuition that "connections are resources."

Within the framework of resource dependence theory, multiple board memberships can indeed bring information advantages and network channels. But from the perspective of monitoring effectiveness, the other side of the same coin also holds: the denser the network among directors, the stronger the norms of reciprocity and relational constraints, and the narrower the space for independent judgment. When an audit committee chair simultaneously serves on the boards of multiple firms, what he faces is not only a dispersion of time and energy, but also cross-firm reputational ties and role conflicts.

Even more subtle is the "expectation of reciprocity." In a highly interwoven director network, today's rigorous questioning may return to oneself tomorrow in another form. This implicit logic of exchange does not appear in any formal institutional text, yet it substantively affects the intensity and depth of questioning.Therefore, the erosion of transparency by interlocking appointments is not a moral issue but a structural issue. What it erodes is the adversarial character of governance—and that adversarial character is precisely the rationale for the audit committee’s existence.

This also explains why governance reform can dampen this negative effect: when disclosure standards are made explicit by external rules and oversight procedures are institutionalized, the room for personal judgment is compressed, and the influence of network ties on disclosure quality diminishes accordingly. The power of institutions is partly reflected in their substitution for interpersonal networks.

IV. How Regulatory Reform Amplifies Governance Effectiveness

In 2017, Saudi Arabia carried out a round of corporate governance reform under the “Vision 2030” framework, with core objectives including enhancing transparency, strengthening investor confidence, and aligning companies with international standards. The study introduced this institutional change into the model as a moderating variable, and the results show that after the reform, the positive influence of independent and experienced audit committee chairs on ESG disclosure was further strengthened, while the negative influence of interlocking appointments was weakened.

This “moderating effect” has more strategic implications than the main effect. It shows that governance reform does not raise disclosure levels through direct coercive means; rather, by changing the conditions under which governance attributes function, it indirectly improves the efficiency of governance structures.

In other words, reform itself does not produce disclosure quality; it produces the environment that allows high-quality governance structures to take effect. The same independent chair, at the same company, in the institutional environments before and after the reform, is able to realize a different intensity of oversight.

This mechanism is especially important for emerging markets. The study notes that emerging markets generally face weak enforcement mechanisms, immature regulatory frameworks, and inconsistent governance practices, factors that weaken audit committees’ ability to oversee ESG disclosure. In such an environment, the effect of any single governance element is often diluted. The value of governance reform lies precisely in integrating dispersed elements into a predictable system of rules, transforming attributes such as independence and expertise from “nominal existence” into “substantive effectiveness.”

V. Disclosure Quality Is Not Equal to Sustainability Performance: A Boundary That Must Be Maintained

When discussing this study, one easily overlooked distinction is crucial: the study measures ESG disclosure quality, not ESG performance itself.

This is a boundary that must be maintained. Disclosing more fully and transparently does not automatically mean that a company performs better on environmental or social issues. A company may very well truthfully disclose that its emissions remain high or that labor disputes do exist, and such truthfulness itself is precisely a manifestation of disclosure quality.

Equating disclosure levels with sustainability performance can lead to misjudgments in two directions: on the one hand, it may overestimate the actual performance of firms that disclose adequately; on the other hand, it may penalize firms that candidly disclose problems and therefore are at a disadvantage in ratings.For investors, this means that the use of ESG data requires distinguishing between “comparability” and “materiality”; for companies, it means that the first step toward improving disclosure quality is to accept the short-term scrutiny that transparency itself may bring. Governance structure is critical precisely because it determines whether a company can withstand such pressure without retreating into selective disclosure.

VI. From Saudi Arabia to the World: A New Pricing Logic in Institutional Competition

Saudi Arabia is not an isolated case. Globally, ESG disclosure is moving from voluntary practice toward regulation. In 2023, the International Sustainability Standards Board (ISSB) issued IFRS S1 and S2; the European Union’s Corporate Sustainability Reporting Directive (CSRD) has gradually expanded its scope of application; and multiple emerging markets have successively introduced localized mandatory or semi-mandatory disclosure requirements.

This process has changed the negotiating conditions between companies and capital markets. As disclosure standards converge and information comparability improves, capital’s ability to identify governance quality increases accordingly, making governance premiums easier to price. For emerging-market companies seeking to attract international long-term capital, governance structure is no longer merely a compliance cost, but increasingly close to a kind of financing infrastructure.

Conversely, this also creates competitive pressure at the institutional level. The research notes that improving governance practices helps attract international investors, enhance the level of sustainability integration, and align companies with international standards. When a country’s corporate governance reform can systematically improve the credibility of disclosure, its capital market’s position in cross-border allocation will also change accordingly.

This also poses a challenge for multinational companies. Operating in different jurisdictions means having to satisfy multiple sets of disclosure standards and multiple governance expectations at the same time. The chair of the audit committee at the group level often needs to bridge institutional differences and find a balance between a unified governance framework and local compliance requirements. The research findings suggest that in this complexity, the value of independence and professional experience will be further amplified, while the marginal utility of the traditional practice of relying on personal networks for coordination will continue to decline.

VII. A Judgment Framework for Companies and Investors

To translate this research into actionable judgments, it is necessary to move beyond the compliance mindset of “whether regulatory requirements are met” and toward a dynamic assessment of governance effectiveness.

First, treat the audit committee chair as an upstream variable in disclosure quality. When assessing the credibility of a company’s ESG information, the chair’s source of independence, professional background, and workload should become analytical dimensions as important as the disclosure framework.

Second, be cautious about interlocking appointments rather than simply giving them extra credit. Multiple directorships may bring value at the level of strategic resources, but they require additional scrutiny in supervisory functions. The particular nature of the audit committee chair role means that its evaluation criteria should not be treated as entirely equivalent to those of other board positions.Third, pay attention to the moderating role of the institutional environment. The same governance structure will produce different practical effects under different regulatory environments. Investment judgments in emerging markets need to incorporate the reform process itself into the analysis as a variable, rather than treating it as a static background.

Fourth, distinguish disclosure quality from sustainability performance. The two serve different functions in analysis, and conflating them will lead to systematic misjudgment.

It should be noted that this study itself has limitations. The sample is concentrated in a single market, Saudi Arabia, covering the observation period from 2014 to 2023, with a total of 243 firm-year observations; although the fixed effects model controls for time-invariant heterogeneity at the firm level, strictly speaking, it is still difficult to fully rule out endogeneity. The value of the study's conclusions lies more in that it provides an analytical framework that can be tested in other emerging markets, rather than a universal causal conclusion.

Conclusion: Governance Capacity Is Becoming Financing Capacity

The institutionalization of ESG disclosure is redistributing the roles of specialized board committees. The audit committee chair is gradually changing from a procedural chair to a substantive guarantor of the credibility of non-financial information. Behind this shift is the capital market's rising demand for information quality, as well as the structural pressure brought by the convergence of global sustainable disclosure rules.

The moderating effect of corporate governance reforms on the relationship between audit committee chair attributes and ESG disclosures — Humanities and Social Sciences Communications (Nature Portfolio), 2026, Volume 13, Article Number 390. Original link: https://www.nature.com/articles/s41599-026-06536-1

The lessons from the Saudi case are not limited to any single emerging market. It points to an emerging global business rule: as disclosure standards converge and information comparability improves, differences in governance structures will no longer be obscured by information asymmetry, but will be directly reflected in the cost of capital and investor trust. For firms, this means that governance capacity is shifting from a compliance issue to a competitive capability; for investors, this means that in markets with rapidly evolving institutions, governance quality is one of the few leading indicators worth tracking over the long term.