The Impact of ESG Performance on Financial Performance in ASEAN Firms: The Moderating Role of Slack and Regulation

In the modern business world, companies are increasingly judged not just on how much money they make, but on how they make it. This shift has given rise to a concept known as ESG, which stands for Environmental, Social, and Governance. Think of it as a report card for a company's behavior: the environmental score tracks how well a firm protects nature and manages waste; the social score measures how it treats its workers and the communities around it; and the governance score looks at how honestly and fairly the company is run. For years, a major question has lingered in boardrooms and academic halls: does doing good actually help a company do well financially? Some argue that being responsible builds trust and saves money in the long run, while others worry that the cost of being green and ethical eats into profits. The answer, it turns out, is not a simple yes or no, but rather a complex story that depends heavily on where the company is located and how much money it has sitting in the bank.

A team of researchers from Indonesia set out to untangle this relationship by looking at thousands of companies across six Southeast Asian nations: Indonesia, Malaysia, Singapore, Thailand, Vietnam, and the Philippines. They gathered data from over 2,000 company-year observations between 2020 and 2024, a period that included the global pandemic and the subsequent economic recovery. Their goal was to see if high ESG scores led to better financial results, measured by how efficiently a company used its assets to generate profit. They also wanted to test two specific conditions that might change the outcome: whether having extra cash on hand (known as financial slack) helped or hurt the effort, and whether strict government rules about reporting made a difference.

The study found a clear, positive link between good ESG performance and financial success, but with a significant twist. Companies that scored higher on environmental, social, and governance metrics generally saw better returns on their assets. This supports the idea that responsible business practices improve operational efficiency and reduce risk. However, the researchers discovered that having a large cushion of extra cash did not help this relationship; in fact, it made it weaker. When a company had too much free money available, the positive impact of its ESG efforts on profits actually diminished. The researchers suggest that when resources are abundant, managers might become less disciplined, potentially wasting funds on sustainability projects that do not generate real value or failing to integrate these initiatives effectively into the core business strategy.

In contrast, the presence of strict government regulations acted as a powerful booster. In countries where companies were legally required to report on their sustainability practices, the link between doing good and making money became much stronger. The rules forced companies to be transparent and accountable, ensuring that their ESG efforts were genuine rather than just a public relations exercise. This regulatory pressure helped turn sustainability into a strategic advantage that directly improved financial performance. The effect was so distinct that it varied by country; for instance, in Singapore, where reporting rules are rigorous, the benefits were clear, whereas in nations like Indonesia, Malaysia, and Thailand, the financial payoff was less consistent or statistically insignificant.

The researchers also looked at how these dynamics played out during the pandemic versus the recovery period. During the height of the crisis, ESG performance was particularly effective at supporting financial stability, likely because stakeholders were paying closer attention to corporate responsibility when the future was uncertain. Once the world began to recover, this immediate financial benefit faded, suggesting that the value of sustainability is most visible when the business environment is under stress. Furthermore, when breaking down the ESG score into its three parts, the environmental dimension was the only one that consistently drove financial gains on its own. Social and governance improvements, while important, did not show the same immediate impact on profits in this specific dataset, perhaps because their benefits take longer to materialize or are harder to measure in the short term.

Ultimately, the study paints a picture where doing good is good for business, but only under the right conditions. It is not enough for a company to simply have a lot of money or to claim they are sustainable. The research suggests that the most successful path involves a combination of genuine environmental action and a regulatory environment that demands honesty. When companies are held accountable by clear rules, their efforts to be responsible translate directly into better financial health. Without those rules, or if they have too much free cash to spend without oversight, the connection between being a good corporate citizen and being a profitable one becomes much harder to find.