Most Brands Cite the UN Guiding Principles. Few Can Evidence Them. Here’s the Architecture That Changes That.

The UN Guiding Principles on Business and Human Rights have been the global standard for corporate human rights responsibility since 2011. Most large brands reference them in their sustainability reports. Most compliance teams can point to a policy that cites them.

What very few can do is demonstrate, with structured evidence, that those principles are being respected in practice — in the facilities, with the workers, across their value chain.

That gap is precisely where regulators are looking. And it’s the gap that the WELL Survey and WOVO Improve are built to close.

Audits Show You a Day. Workers Tell You the Truth.

The UNGPs are built around three pillars: the state duty to protect, the corporate responsibility to respect, and access to remedy. For brands operating through complex global supply chains, the second and third pillars are where the compliance work lives — and where the evidence is hardest to collect.

Facility audits capture a snapshot. Supplier self-certifications capture a statement. Neither captures what workers actually experience — whether they feel safe raising a concern, whether a grievance mechanism is genuinely accessible to them, whether a policy that exists on paper has reached the factory floor.

Without worker-level evidence, you cannot know whether your human rights due diligence is working. You can only know that it exists.

Two Products, One Mapping Architecture: Worker Voice Meets Supplier Systems

The WELL Survey and WOVO Improve are designed as complementary instruments — two different lenses on the same question.

The distinction that drives the architecture is this: some UNGP principles can only be assessed by asking workers directly. Others require examining what suppliers have built.

The WELL Survey captures the worker voice side. It produces evidence against the principles that depend on lived experience — whether core internationally recognised rights are being respected (P12), whether adverse impacts are being avoided or addressed (P13), whether meaningful consultation is taking place (P18), whether remediation is genuinely accessible (P22). These are not questions a supplier can answer on a worker’s behalf.

WOVO Improve captures the supplier system side. It assesses whether policy commitments are real (P16), whether human rights due diligence is actually being conducted (P17), whether findings are being integrated into operational decisions (P19), and whether suppliers are meeting their accountability obligations to external stakeholders (P21).

Neither instrument alone produces a complete picture. Deployed together, they generate the kind of structured, cross-referenced evidence that CSDDD, LkSG, and equivalent frameworks require — evidence that can withstand regulatory scrutiny and investor review.

Every indicator in both products is mapped in our WELLBank, the single source of truth for all question-level, indicator-level, and competency-level UNGP mappings across our product suite.

When the Stakes Are Highest, the Scoring Reflects That

Not all rights violations carry the same weight — and our indicator architecture doesn’t treat them as if they do.

Across the full indicator suite — covering Occupational Health and Safety, Harassment and Abuse, Responsible Recruitment, Freedom of Movement, Child Labour, and Grievance Mechanisms, among others — the indicators that measure the most severe potential violations are designated as salient.

A low score on a salient indicator doesn’t simply flag a gap in a dashboard. It triggers an elevated risk classification and a defined response protocol, reflecting how the UNGPs themselves approach severity: adverse impacts that are grave, widespread, or irreversible require prioritised attention (P24) and a proportionate due diligence response (P17, P19).

UNGP Principle 31: The Eight Criteria Most Brands Have Never Actually Measured

One of the most consequential — and most overlooked — elements of the UNGP framework is Principle 31, which sets out eight effectiveness criteria that any company-level grievance mechanism must meet to be considered functional.

A grievance mechanism must be legitimate, accessible, predictable, equitable, transparent, rights-compatible, a source of continuous learning, and based on engagement and dialogue. These criteria appear in regulatory guidance, investor questionnaires, and sustainability commitments across the industry. They are almost never measured directly.

The WELL Survey and WOVO Improve both include Grievance Mechanism indicators that map individually to each of the eight P31 criteria — distinguishing between what workers report experiencing and what supplier systems are designed to provide. When both instruments are deployed together, the combined output produces a structured finding against each criterion: not a general impression, but an evidenced position on whether the mechanism is actually working for the people it is supposed to serve.

Built for CSDDD, LkSG, and the Regulatory Landscape You’re Already Operating In

The UNGP mapping doesn’t sit in isolation. Every WELL indicator and every WOVO Improve competency is also mapped to the relevant ILO conventions, SDG targets, and — critically — the EU Corporate Sustainability Due Diligence Directive.

As mandatory human rights due diligence obligations expand across jurisdictions — CSDDD in the EU, LkSG in Germany, the UK Modern Slavery Act, and equivalent frameworks emerging across Asia and the Americas — the question for brands is no longer whether to conduct due diligence. It’s whether the due diligence they’re conducting is demonstrably meaningful.

A survey score in isolation is not a compliance artefact. But a structured programme of worker voice measurement, combined with supplier self-assessment, cross-referenced against a documented framework mapping — that is what due diligence looks like in practice. The WELL and WOVO Improve mappings are designed to produce exactly that kind of documentation, in language aligned with how regulators and auditors expect to see it presented.

The Signal That No Audit Will Reliably Surface

The most valuable output of running the WELL Survey and WOVO Improve together is not a score. It’s the divergence.

When a supplier demonstrates strong systems in WOVO Improve — policy commitments in place, due diligence processes documented — but WELL Survey results show workers reporting a different experience, that gap is telling you something critical: the system exists, but it isn’t reaching the people it is supposed to protect.

That divergence — policy present, practice absent — is precisely the scenario that human rights due diligence frameworks are designed to surface. It is also the scenario that audit-only approaches will routinely miss.

Evidence That Works Across Every Audience

A structured UNGP mapping also makes your compliance evidence portable. Whether you’re completing a CSDDD due diligence record, responding to an investor ESG questionnaire, preparing for a regulatory submission, or communicating findings to a civil society stakeholder, the same underlying data can be presented in the language each audience expects — without starting from scratch for every reporting cycle.

Human rights due diligence is not a project, its a practice. The value of a rigorous mapping architecture is that it keeps that practice grounded in what matters: the experiences of workers, the systems suppliers are building, and the global standards that both are accountable to.

Ready to Build an Evidence Base That Holds Up?

Explore the WELL Survey, explore WOVO Improve, or talk to the Labor Solutions team about building a due diligence programme that produces evidence regulators, investors, and auditors will accept.