What is social sustainability and how does it fit into ESG?

Social sustainability is the “S” in ESG, and it refers to how a company manages its relationships with people: its employees, supply chain workers, customers, and the communities where it operates. Within the ESG framework, the social pillar sits alongside environmental performance and governance, and together these three dimensions shape how investors, regulators, and business partners assess a company’s long-term resilience. The sections below unpack each core question about social sustainability, from its definition to how companies can actively strengthen their scores.

How does the social pillar differ from environmental and governance in ESG?

The three ESG pillars each ask a fundamentally different question. The environmental pillar asks how a company affects and depends on the natural world. The governance pillar asks how a company is directed and held accountable. The social pillar asks how a company treats people, covering relationships with employees, suppliers, customers, and communities. Each pillar is distinct, but all three are interconnected and together determine a company’s overall sustainability profile.

In practical terms, environmental metrics capture things like carbon emissions, water use, and waste generation. Governance metrics examine board composition, executive accountability, and anti-corruption mechanisms. Social metrics, by contrast, focus on labor practices, human rights, workplace safety, diversity and inclusion, and supply chain conduct. Under the European Sustainability Reporting Standards (ESRS), the social dimension is structured across four dedicated standards: S1 for the company’s own workforce, S2 for workers in the value chain, S3 for affected communities, and S4 for consumers and end-users.

What makes the social pillar particularly relevant for B2B companies in 2026 is that it is no longer a reputational nicety. Disclosure is shifting from voluntary to mandatory across major jurisdictions, and the social standards embedded in frameworks like ESRS mean that supply chain labor practices, grievance mechanisms, and worker welfare are now reportable, auditable, and financially material. Companies that treat the social pillar as a box-ticking exercise increasingly face commercial and regulatory consequences.

What does social sustainability actually cover?

Social sustainability covers the full range of ways a business affects people’s wellbeing, both inside and outside the organization. This includes fair labor practices, occupational health and safety, workforce diversity, community engagement, product safety, and responsible supply chain management. It is a long-term commitment to ensuring that social conditions are optimized not just for today’s stakeholders but for future generations.

In a business context, social sustainability maps directly to several UN Sustainable Development Goals, including SDG 3 (good health and wellbeing), SDG 5 (gender equality), and SDG 8 (decent work and economic growth). These are not abstract ideals. For food industry companies, they translate into concrete obligations: fair wages and working hours across the supply chain, occupational safety standards, access to grievance mechanisms for value chain workers, and responsible product labeling.

Product responsibility is an increasingly prominent part of the social pillar, particularly in the food sector. Food safety, transparent labeling, and responsible sourcing are now understood as social sustainability issues, not just operational ones. Regulators, NGOs, and institutional buyers expect companies to demonstrate that their sustainability commitments extend to human wellbeing, not just environmental metrics. This is why certifications like BRCGS and FSC Chain of Custody carry real weight in social sustainability assessments: they provide independently verified evidence that a company’s supply chain meets defined standards for safety, traceability, and responsible sourcing.

How is social sustainability measured and reported?

Social sustainability is measured through a combination of quantitative KPIs and qualitative disclosures, structured under frameworks such as ESRS, GRI, and SASB. Core social KPIs include employee diversity ratios, pay equity, health and safety incident rates, supplier audit results, and the percentage of spend with ethically certified suppliers. Reporting requirements depend on a company’s size and jurisdiction, but the direction of travel across major markets is toward mandatory, auditable disclosure.

Under the CSRD and its underlying ESRS standards, companies in scope must report social performance using a double materiality assessment, meaning they must evaluate both the impact their operations have on people and the financial risks that social issues pose to the business. The four social standards (ESRS S1 through S4) each carry specific disclosure requirements. ESRS S1, covering a company’s own workforce, retains the most immediate obligations, while S2, S3, and S4 have phased timelines, with Wave 1 reporters able to defer some of these until the 2027 financial year.

It is worth noting that the ESRS social standards underwent significant revision in EFRAG’s November 2025 draft, which introduced relief for smaller in-scope companies and reduced the total datapoint burden substantially. Even so, the core architecture of S1 to S4 remains intact, and the expectation that companies can demonstrate responsible workforce and supply chain practices has not diminished. For companies that fall outside mandatory CSRD scope following the 2026 Omnibus reform, EFRAG’s voluntary VSME standard provides a practical alternative that satisfies data requests from large customers and banks operating under CSRD obligations.

What’s the difference between social sustainability and CSR?

Social sustainability is the long-term goal: ensuring that social conditions support human wellbeing across generations. Corporate Social Responsibility (CSR) is the organizational commitment to work toward that goal. CSR attributes accountability to companies and is largely self-regulated and qualitative. Social sustainability, as embedded in ESG frameworks, is increasingly quantitative, externally regulated, and tied directly to financial performance and business valuation.

A useful way to think about the distinction is that CSR is the precursor to ESG. Companies first self-regulated through CSR commitments, articulating values and voluntary social commitments. ESG then provided the architecture to translate those commitments into measurable metrics, external verification, and mandatory disclosure. As one widely cited framing puts it, CSR is the idealistic, big-picture perspective, while ESG is the practical, detail-oriented implementation.

In 2026, the gap between the two has widened in regulatory terms. A company can publish a CSR statement with no external verification and face no legal consequence. A company subject to CSRD must disclose its social performance using ESRS, have those disclosures assured by a third party, and include them in its annual management report. For B2B buyers and investors, this distinction is increasingly material: certified, auditable social performance carries far more weight than narrative CSR commitments. The transition from CSR culture to ESG-reportable metrics is precisely what certifications like BRCGS and FSC CoC help companies evidence.

Why are investors paying more attention to the social pillar now?

Investors are paying more attention to the social pillar because it has become financially material. Human rights diligence, supply chain labor standards, and workforce resilience are no longer soft reputational factors. They are quantifiable risk variables that affect contract stability, regulatory exposure, and long-term value creation. A 2025 PwC survey found that a significant majority of investors report that sustainability metrics directly improve their confidence in a company, and the social pillar is increasingly central to that assessment.

Several forces are driving this shift simultaneously. Mandatory disclosure under CSRD means that social performance data is now auditable and comparable in ways it never was under voluntary CSR reporting. Rating agencies like MSCI have updated their ESG models to reflect increased regulatory scrutiny of supply chain labor standards. And enforcement is real: greenwashing penalties in Europe have reached tens of millions of euros, and the EU’s Empowering Consumers for the Green Transition Directive, effective from September 2026, bans vague or unsubstantiated sustainability claims entirely.

For food brands and retailers, the supply chain dimension of the social pillar is particularly acute. Procurement teams are now using ESG metrics in supplier assessments, tracking audit pass rates, corrective action completion, and the proportion of spend with ethically certified suppliers. This means that a packaging supplier’s social sustainability credentials, including certifications like BRCGS and FSC CoC, directly reduce a buyer’s own ESG risk score. The social pillar has moved from a values conversation to a procurement filter.

How can companies improve their social sustainability score?

Companies improve their social sustainability score by building verifiable, auditable evidence of responsible practices across their workforce and supply chain. The most effective starting points are third-party certifications, formal grievance mechanisms, and structured social KPI tracking aligned with recognized frameworks such as ESRS or GRI. The shift from narrative sustainability commitments to measurable, audit-ready documentation is the defining feature of social sustainability maturity in 2026.

Practically, improvement focuses on several interconnected areas:

• Supply chain transparency: Mapping suppliers and verifying their labor and safety practices, ideally through recognized certification schemes or third-party audits. FSC Chain of Custody certification, for example, provides traceable evidence that fiber-based materials originate from responsibly managed sources, which directly supports S2 (value chain workers) disclosures under ESRS.
• Workforce data: Collecting and reporting baseline social KPIs, including workforce diversity, pay equity, health and safety incident rates, and training hours. Even companies outside mandatory CSRD scope will face these data requests through their customers and lenders.
• Product responsibility: Ensuring that product safety and quality standards are independently certified. In the food packaging sector, BRCGS certification provides externally verified evidence that packaging meets uniform safety and quality criteria, which supports a food brand’s own social sustainability claims regarding supply chain integrity.
• Grievance mechanisms: Establishing accessible channels for workers and suppliers to raise concerns, a specific requirement under ESRS S2 and a key indicator of social maturity for investors.

For companies that are not yet subject to mandatory CSRD reporting, EFRAG’s VSME standard offers a structured, proportionate approach. Its Basic Module covers core workforce statistics and governance policies, while the Comprehensive Module adds strategy, formal targets, and detailed supply chain practices for companies seeking green financing or preferred supplier status.

The underlying principle is straightforward: social sustainability scores improve when commitments are backed by independently verifiable evidence. Certifications, audits, and structured KPI reporting are not compliance burdens; they are the mechanism through which responsible practices become commercially credible. We at Jospak have built our sustainability credentials on exactly this foundation, combining FSC CoC traceability with BRCGS AA+ food safety certification to provide our customers with supply chain assurance that holds up to ESG scrutiny.