Worker voice & access · Guide
Worker voice and confidential reporting in supply-chain due diligence
Most forced labour indicators are visible first to the people experiencing them. Worker voice is how due diligence hears from them. This guide covers what a channel must do to be used, what confidentiality can and cannot promise, and how signals should flow into human review.
Published by Libera Europe · Last reviewed 5 October 2026
What worker voice adds
Supplier questionnaires and audits tell you what a supplier says and what an auditor saw on a given day. Workers can tell you what happens the rest of the year: the fee they paid, the passport they cannot get back, the overtime they could not refuse. Due diligence frameworks such as the UN Guiding Principles and the OECD guidance treat engagement with affected stakeholders, and accessible grievance mechanisms, as core to identifying impacts.
Design requirements for a channel people use
| Requirement | What it means in practice |
|---|---|
| Reachable | Several access points where workers can stand safely; works on a basic phone; low data. |
| Understandable | In the languages workers read, with plain wording and no account to create. |
| Confidential | No name, phone number or precise location required; individual reports not visible to site management. |
| Trusted | Introduced honestly, without pressure to report; explains what happens to a report. |
| Useful | Reports lead to review and action, and workers can check status. |
| Verified | Access is checked and recorded — see why zero reports is not zero risk. |
Confidential is not the same as anonymous
Honest channels distinguish between what the software collects and what the worker's situation reveals. A system can avoid collecting names, phone numbers and precise location, yet a report describing a unique situation at a small site may still identify the person to someone who knows the site. Messaging apps carry their own metadata. Good practice is to explain this plainly to workers rather than promise absolute anonymity.
From signal to human decision
- Signals are mapped to ILO indicators and grouped per site, supplier and labour provider.
- Severe or safeguarding-relevant signals are routed for priority human review — never suppressed by volume caps.
- A reviewer decides on next steps: engagement, investigation, remediation or monitoring.
- Cases record evidence, decisions, owners and dates; workers can check status with a receipt code.
- Effectiveness is checked through later signals and access re-verification, not attestation alone.
See the worker-signal escalation protocol and worker reporting software.
Ethical facilitation
- Never pressure, incentivise or require workers to report.
- Never ask who reported, or try to find out.
- Place access points discreetly, not under cameras or in supervisors' offices.
- Be clear that the channel does not replace emergency services or trade unions.
- Protect against retaliation and treat retaliation signals as safeguarding issues.
Sources and method
Written by Libera Europe from the primary sources below. Where a fact could not be confirmed in a primary source it was left out. This is general information, not legal advice; laws and guidance change, so check the current official text.
- UN Guiding Principles on Business and Human Rights — Principle 31
- OECD Due Diligence Guidance for Responsible Business Conduct
- Directive (EU) 2024/1760 (CSDDD) — EUR-Lex
- ILO — Indicators of Forced Labour
Libera produces risk indicators as prompts for human review, not findings. It does not determine that forced labour occurred, does not guarantee compliance with any law and is not legal advice.