Complex supply chains ‘raise modern slavery risk in construction’
Summary
IOSH has warned that complex subcontracting, agency labour and fragmented supply chains in construction can obscure modern slavery risks and make exploitation harder to detect. Its survey found many businesses lack formal processes to assess these risks, despite some respondents expressing confidence in their ability to manage them, and the issue is underscored by rising modern slavery case numbers in construction.
Why it matters
Residential property surveyors may encounter projects and supply chains where labour exploitation risks sit within wider procurement and contractor management arrangements. The article highlights the need for due diligence and awareness of modern slavery indicators when assessing construction-related risk and compliance.
Key points
- IOSH says construction supply chains can mask modern slavery through subcontracting and agency labour.
- A survey found 70% of respondents had no formal process for assessing modern slavery risks.
- The Modern Slavery Act 2015 reporting duty applies only to companies above the £36m turnover threshold.
- UK helpline data showed construction-related reports and potential victims increased in 2025.
- The Anti-Slavery Commissioner called for stronger due diligence, worker voice and accountability.
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