Forced labour fundamentals · Guide
Passport and identity-document retention as a forced labour indicator
A worker without their passport cannot easily change employer, travel, or prove their status to the police. That is why the ILO lists retention of identity documents as an indicator of forced labour — and why 'we keep them safe for workers' is one of the most common explanations auditors hear.
Published by Libera Europe · Last reviewed 5 October 2026
Why document retention matters
Identity documents are leverage. Holding them restricts movement, deters complaints to authorities and makes leaving a job expensive or dangerous — particularly for migrant workers whose legal status depends on the papers. The ILO's indicators describe retention of identity documents as a sign that a worker may not be free to leave, especially where the worker cannot get them back on request.
Some jurisdictions treat confiscating or withholding documents in connection with forced labour or trafficking as a criminal offence in its own right — for example 18 U.S.C. § 1592 in the United States. The position varies by country; check local law.
Safekeeping versus retention
Not every arrangement is coercive. The test is control: can the worker get the document back, without delay, without asking permission and without penalty?
| Question | Lower concern | Higher concern |
|---|---|---|
| Who holds the key? | Worker-held personal locker | Employer, agent or supervisor |
| Access on request | Immediate, any time | Requires approval, notice or a reason |
| Consent | Voluntary, written, revocable | Condition of employment or recruitment |
| Original or copy | Employer holds a copy only | Employer holds originals |
| Linked to debt or contract end | No | Returned only after repayment or contract completion |
How to check for it
- Ask for the written document-holding policy, then check whether practice matches it.
- Look at the physical arrangement: lockers, who holds keys, where originals are stored.
- Ask agencies — including sending-country sub-agents — the same questions as the site.
- Never ask workers about documents in front of supervisors or agents.
- Use a confidential channel so workers can raise it without being identified.
Remediation
- Return all originals to workers and record the date — confirmed by workers, not only management.
- Provide individually controlled storage if workers want it.
- Correct the policy for the site and every agency involved.
- Look for the indicators that commonly accompany retention: debt, restricted movement, withheld wages.
- Re-check through worker voice after a period, rather than closing on attestation.
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.
- ILO — Indicators of Forced Labour
- ILO — General principles and operational guidelines for fair recruitment
- US Code — 18 U.S.C. § 1592 (unlawful conduct with respect to documents)
- US DOL — List of Goods Produced by Child or Forced Labor
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.
