ESG and the Triple Bottom Line: Standards, Materiality and Evidence Limits

ESG is not one score or one reporting system. The Triple Bottom Line is not an accounting standard. Treating either label as proof that a business is sustainable creates a chain of avoidable errors: a policy becomes a performance claim, a target becomes an outcome, and an association becomes a causal promise of higher profit.

This review explains what the terms can support. It distinguishes observed evidence, institutional requirements, targets and standards, company self-reporting, estimates and scenarios, and author interpretation. Mandatory law, voluntary frameworks and empirical research are identified within those categories rather than blended into a single ESG claim.

Evidence cut-off: 14 August 2026.

Start with the reporting purpose

The World Commission on Environment and Development’s 1987 report, commonly known as the Brundtland Report, framed sustainable development as meeting present needs without compromising the ability of future generations to meet theirs. That is a public-policy concept. It does not provide a corporate scorecard.

The 2004 Who Cares Wins report brought environmental, social and corporate-governance issues into a financial-market discussion. It helped establish the modern use of “ESG”, but it did not create a single definition, calculation method or legal regime.

John Elkington developed the Triple Bottom Line in Cannibals with Forks, first published by Capstone in 1997. Its economic, environmental and social dimensions offered a way to challenge financial-only accounts of business success. In a 2018 reflection, Elkington argued that the concept had often been weakened into an accounting exercise rather than used to question system-level effects.

These histories matter because the terms began as broad ideas. The detailed disclosure requirements now associated with them came later and differ by audience, materiality and legal authority.

ESG is an umbrella term

Environmental, social and governance topics are usually grouped as follows:

• Environmental: climate, energy, pollution, water, materials, waste, biodiversity and ecosystem dependencies or impacts.
• Social: workers, working conditions, human rights, communities, consumers, product safety, access and distributional effects.
• Governance: oversight, ethics, internal controls, anti-corruption, incentives, risk management, shareholder rights and the reliability of reporting.

The categories overlap. A climate transition can affect workers and communities. Supply-chain labour conditions depend on procurement controls. Product safety is a social outcome with governance and financial consequences. A three-column list is therefore an organising device, not an analysis.

An “ESG score” adds another layer of judgement. A provider must decide which topics enter the score, how each topic is measured, how missing data are handled and how components are weighted. Different choices can produce different ratings for the same company.

The Triple Bottom Line is a management lens

The Triple Bottom Line asks decision-makers to consider economic, environmental and social outcomes together. “Profit, planet and people” is a useful memory aid, but it can conceal a measurement problem. Profit has an established monetary unit. A workplace injury, tonne of carbon dioxide equivalent, litre of water withdrawn and effect on a community do not share one natural denominator.

TBL therefore does not produce one auditable bottom-line number unless an organisation first selects boundaries, indicators, valuation methods and weights. Those choices are normative. A monetary valuation can aid comparison, but it does not remove the judgement about whose costs count, over what period and at what discount rate.

The concept remains useful at the decision stage. It can expose a proposal that improves short-term financial results by shifting environmental or social costs to workers, communities, governments or future periods. It cannot by itself determine whether the proposal is lawful, material under a reporting standard or sustainable in an absolute sense.

How TBL and ESG relate

The original article described ESG as a system that operationalises TBL. That relationship is too neat. Neither term has one accepted implementation, and current standards were developed for different users.

Instrument or label	Main function	Primary audience	Materiality orientation	Legal status by itself
Triple Bottom Line	Management concept for considering economic, environmental and social outcomes	Managers and stakeholders	Not prescribed	None
ESG	Umbrella label for environmental, social and governance matters	Varies	Varies by user and method	None
IFRS S1 and S2	Sustainability-related financial disclosure	Existing and potential investors, lenders and other creditors	Effects on an entity’s prospects	Standards; a jurisdiction must adopt or otherwise use them to create a regulatory duty
GRI Standards	Reporting an organisation’s impacts on the economy, environment and people	A broad set of stakeholders	Most significant impacts	Standards; voluntary use unless another duty incorporates them
ESRS under the EU framework	Sustainability reporting by undertakings within legal scope	Investors and other stakeholders	Double materiality	Mandatory where the applicable EU and national legal requirements place an undertaking in scope

The practical rule is simple: identify the decision and user before choosing a framework. An investor-focused disclosure may omit an impact that does not meet its financial-materiality test. An impact report may cover that same issue because the organisation substantially affects people or the environment. Both can be prepared carefully without answering the same question.

Three approaches to materiality

Financial materiality under ISSB Standards

IFRS S1 requires information about sustainability-related risks and opportunities that could reasonably be expected to affect an entity’s cash flows, access to finance or cost of capital over the short, medium or long term. Disclosures address governance, strategy, risk-management processes, and metrics and targets.

IFRS S1 and IFRS S2 were issued in June 2023 and are effective for annual reporting periods beginning on or after 1 January 2024. That is the standards’ effective date. It does not mean that every company in every country became legally required to use them on that date. The IFRS Foundation’s jurisdictional guidance states that adoption or other use requires legal or regulatory action whose form depends on the jurisdiction.

The standards also change through due process. The ISSB issued targeted IFRS S2 greenhouse-gas amendments in December 2025, effective from 1 January 2027 with early application permitted. A compliance claim should therefore name the version and reporting period rather than cite “ISSB” generically.

Impact materiality under GRI

GRI 1 directs an organisation to identify its most significant impacts on the economy, environment and people, including human rights. The GRI system combines Universal, Sector and Topic Standards.

This orientation starts with what the organisation does to the world, including through business relationships, rather than only what sustainability matters may do to its financial prospects. Positive and negative impacts can coexist, and an organisation should not use an unrelated benefit to cancel a material harm.

GRI is a standard-setting system, not a legislature. An organisation may use it voluntarily, while a government, stock exchange, lender, customer or contract may separately require particular disclosures. The source of that obligation should be stated.

Double materiality under European law

The European Sustainability Reporting Standards use double materiality: impact materiality and financial materiality are assessed as distinct but connected perspectives. The standards sit within an EU legal framework rather than operating only as voluntary guidance.

The legal position is also dynamic. Directive (EU) 2026/470, in force from March 2026, narrowed and revised parts of the corporate sustainability reporting framework and gave Member States until 19 March 2027 to transpose its corporate-reporting amendments.

The Commission then adopted revised ESRS on 3 July 2026. At this article’s evidence cut-off, that delegated regulation had not entered into force because it had not yet been published in the Official Journal. The adopted text states that the revised standards are to apply for financial years beginning on or after 1 January 2027 and permits optional use for financial year 2026 once the act is legally effective. Until that occurs, Delegated Regulation (EU) 2023/2772, as already amended, remains the operative ESRS instrument. A company should therefore check the Official Journal, the current consolidated EU instruments and the law of the relevant Member State rather than treat Commission adoption as present applicability.

Regional labels do not establish an obligation

Country comparisons often say that a market “has adopted ESG”. That phrase can refer to a voluntary report, an accounting standard, a listing rule, a prudential expectation, a product-labelling rule or legislation. These are not interchangeable.

For a Sri Lankan or cross-border organisation, the first task is to identify the actual authority: legislation, regulation, listing rules, an adopted accounting or disclosure standard, a financing agreement, a customer requirement or an internal commitment. The organisation must then determine the entities, reporting periods and activities within scope. This article does not establish that legal position for a particular company.

Reporting is not proof of performance

The earlier article claimed that strong ESG performance leads to profitability, investor appeal, employee retention, customer loyalty and competitive advantage. Those outcomes are plausible in particular settings, but a broad causal claim is not supported by the evidence reviewed here.

Three distinctions prevent overstatement:

1. Disclosure is not outcome. Publishing a policy or metric shows that information was reported. It does not prove that the underlying impact improved.
2. Association is not causation. Firms with stronger management, greater resources or lower pre-existing risk may both report more and perform differently. A correlation between an ESG measure and financial performance does not isolate the effect of ESG activity.
3. A rating is a method-dependent estimate. It reflects a provider’s data, model and purpose rather than a universal measure of corporate virtue.

Berg, Kölbel and Rigobon (2022) compared six ESG rating agencies. They attributed 56% of rating divergence to measurement, 38% to scope and 6% to weighting within their decomposition. The finding explains why changing the provider can change the apparent result even when the rated company does not change.

Christensen, Serafeim and Sikochi (2022) found that greater ESG disclosure was associated with greater disagreement among raters, with greater disagreement over outcome measures than input measures. This does not mean disclosure is undesirable. It shows that additional disclosure does not automatically create a shared interpretation.

A broad economic analysis and literature review by Christensen, Hail and Leuz (2021) identified unresolved implementation issues in mandatory sustainability reporting, including materiality, boilerplate disclosure, enforcement and assurance. Reporting can change information and behaviour, but its effects depend on the rules, incentives and institutions around it.

A hierarchy for evaluating corporate claims

Claim presented	What it establishes	What is still needed
Policy adopted	A formal intention or rule exists	Implementation records and coverage
Target announced	Management has stated a future result	Baseline, boundary, method, resources and progress
Metric reported	A value has been disclosed	Definition, denominator, comparatives and data controls
Limited assurance obtained	A practitioner performed defined procedures and expressed a limited-assurance conclusion	Exact subject matter, criteria, exclusions and conclusion
Outcome independently observed	A result was measured outside the company’s unsupported narrative	Attribution, counterfactual and durability before making a causal claim

Company reports remain first-party evidence even when prepared under a recognised standard. Assurance can improve confidence within its stated scope, but it is not a guarantee that every sustainability claim is complete or that a business model is sustainable.

A defensible workflow for a manufacturer

The legacy article assigned a hypothetical Sri Lankan soap manufacturer targets such as fixed percentage reductions in water and emissions, a packaging quota, a board-independence ratio and a number of awards to win. No baseline, legal analysis, materiality assessment or technical feasibility evidence supported those numbers. They have been removed.

A manufacturer can develop a defensible reporting system without inventing targets:

1. Establish the obligation and reporting purpose

Identify applicable law, adopted standards, listing or financing conditions, customer requirements and voluntary commitments. Record the intended users and the entity or group boundary. Assign board and management responsibility without assuming that creating an “ESG committee” is always the right structure.

2. Select the materiality approach

Use the materiality definition required by the applicable regime. Engage affected stakeholders where the standard requires or supports it. Keep the evidence for including and excluding topics, and do not confuse stakeholder popularity with impact severity or financial materiality.

For a soap manufacturer, candidate topics could include raw-material sourcing, energy and greenhouse-gas emissions, water withdrawal, wastewater quality, chemical handling, packaging, worker safety, labour conditions in the supply chain, product safety, consumer information, anti-corruption and grievance handling. These are screening topics, not predetermined material findings.

3. Establish a controlled baseline before setting targets

Define the reporting boundary, unit, denominator, calculation method, data owner, source system, estimation method and uncertainty for every metric. Separate absolute measures from intensity measures. A fall in emissions per tonne of product can coexist with a rise in total emissions if production grows.

Targets should follow baseline verification and technical assessment. State whether a target is absolute or intensity-based, voluntary or legally required, science-based or management-selected, and whether it covers operations, purchased energy or the value chain. Awards are not performance indicators.

4. Connect policy to operational controls

A policy needs owners, resources, procedures, escalation routes and evidence of use. Procurement controls should trace relevant supplier requirements. Environmental data should reconcile to meters, invoices, production records or documented estimates. Social indicators need privacy protections and consistent case definitions. Governance records should show decisions, conflicts and remediation rather than only the existence of a code.

5. Report results and methods together

Show the current value, comparative period, boundary changes, restatements, estimation uncertainty and progress against any target. Distinguish:

• observed results measured during the reporting period;
• company targets that remain future commitments;
• externally imposed thresholds from law or contract;
• estimates and scenarios whose assumptions may change; and
• management interpretation of what the results mean.

6. Specify assurance and correct errors

If assurance is obtained, disclose the provider, criteria, level of assurance, subject matter, exclusions and conclusion. Maintain a correction process for measurement or reporting errors. Marketing language should not extend an assurance conclusion beyond the information actually tested.

7. Review changes in impacts, risks and rules

Material topics, value chains and legal requirements change. Reassessment should respond to evidence rather than run as a ritual calendar exercise. Significant incidents, acquisitions, product changes, new scientific evidence and amended standards may require an earlier review.

What decision-makers can conclude

ESG can organise questions about environmental, social and governance matters. TBL can broaden a decision beyond short-term financial results. Neither label supplies a universal score or guarantees improved performance.

The credible unit of analysis is the specific claim. Ask which rule or standard applies, whose information need it serves, how materiality was assessed, what boundary and method produced the metric, whether the result is observed or promised, and what assurance covers. Those questions turn a broad sustainability narrative into evidence that can be examined.

Assessment

Sustainability reporting is moving through standard-setting, regulatory adoption and revision at different speeds. IFRS S1 and S2 provide an investor-focused disclosure baseline. GRI provides an impact-reporting system. EU law uses double materiality for undertakings within its legal scope, with the 2023 ESRS still operative at the evidence cut-off and a revised set adopted but not yet in force. TBL remains a conceptual challenge to one-dimensional business accounting.

The frameworks can complement one another, but they should not be collapsed into a single claim that “ESG creates value”. A report can improve transparency while leaving performance unchanged. A target can be ambitious while remaining unachieved. A high rating can reflect a particular provider’s method rather than agreement across methods.

Good reporting makes these boundaries visible. It names the authority, defines the metric, exposes uncertainty, separates first-party statements from verified observations and corrects unsupported claims.