Supplier engagement and human rights due diligence

Supplier engagement is a critical part of effective human rights due diligence (HRDD). 

Identifying risks is only the first step. Addressing those risks requires companies to work closely with suppliers — not just to enforce standards, but to build the conditions for sustainable improvement. 

This page explains how supplier engagement supports HRDD, what effective engagement looks like in practice, and how companies can move beyond audit-driven approaches. 

What is supplier engagement in HRDD? 

Supplier engagement refers to how companies work with suppliers to identify, prevent, and address human rights risks. 

It includes: 

• Setting clear expectations
• Building supplier capacity
• Maintaining ongoing dialogue
• Monitoring performance
• Supporting remediation where needed 

Effective engagement is collaborative, ongoing, and risk-based. It recognises that many human rights risks cannot be resolved through compliance alone. 

Why supplier engagement matters 

Many human rights risks — including excessive working hours, low wages, or unsafe conditions — are shaped by how buyers and suppliers interact. 

Without meaningful engagement: 

• Risks may be identified but not addressed
• Suppliers may lack the capacity to improve
• Audits may detect issues repeatedly without resolution
• Commercial pressures may undermine compliance 

Stronger supplier relationships enable companies to move from identifying problems to solving them. 

Moving beyond audit-led approaches 

Audits can play a role in HRDD, but they have clear limitations. 

Common challenges include: 

• Limited visibility into deeper supply chain tiers
• Worker reluctance to raise concerns
• Snapshot assessments that miss systemic issues
• Repeated findings without sustained improvement 

Supplier engagement complements — and often improves on — audit approaches by focusing on root causes and long-term change. 

In practice: companies that rely solely on audits often struggle to deliver lasting improvements in working conditions. 

Core elements of effective supplier engagement 

Set clear and consistent expectations 

Suppliers need to understand what is expected of them. 

This includes: 

• Clear codes of conduct aligned with international standards
• Integration of human rights expectations into contracts
• Consistent messaging from different parts of the business 

Clarity is essential — but it is not sufficient on its own. 

Build supplier capability 

Many suppliers face structural constraints, including cost pressure, limited management systems, and regulatory gaps. 

Supporting suppliers may involve: 

• Training on labour standards and management systems
• Guidance on risk assessment and remediation
• Sharing good practice across supplier networks 

Capacity-building is particularly important in high-risk contexts. 

Maintain ongoing dialogue 

Effective engagement is based on regular communication, not one-off interactions. 

This includes: 

• Regular check-ins with suppliers
• Open discussion of challenges and constraints
• Creating space for suppliers to raise concerns 

Dialogue helps build trust and provides early visibility of emerging risks. 

Align purchasing practices 

Commercial decisions have a direct impact on working conditions. 

Companies should review: 

• Pricing structures
• Lead times
• Order forecasting
• Payment terms 

Misaligned purchasing practices can undermine even the strongest supplier requirements. 

If suppliers are under constant cost and time pressure, human rights risks are more likely to arise. 

Engage workers and their representatives 

Supplier engagement should not focus only on management. 

Stronger approaches include: 

• Supporting worker voice mechanisms
• Engaging trade unions where present
• Using grievance data to identify issues 

Workers often have the most accurate insight into conditions on the ground. 

Support remediation 

Where issues are identified, companies should work with suppliers to address them. 

This may include: 

• Developing corrective action plans
• Providing technical or financial support where appropriate
• Following up to ensure issues are resolved 

Remediation should focus on restoring rights and preventing recurrence. 

Linking supplier engagement to risk assessment 

Supplier engagement should be driven by risk. 

For example: 

• High-risk suppliers may require deeper, more frequent engagement
• Lower-risk suppliers may be managed through lighter-touch approaches
• Systemic risks may require collaboration across multiple suppliers or sectors 

This risk-based approach ensures that resources are used effectively. 

For more on identifying priority risks, see: 
HRDD risk assessment for supply chains

Common challenges in supplier engagement 

Companies often encounter similar obstacles: 

• Short-term, transactional supplier relationships
• Limited leverage over suppliers
• Internal misalignment between procurement and sustainability
• Resource constraints for deeper engagement
• Lack of visibility beyond Tier 1 suppliers 

Addressing these challenges often requires changes to internal systems, not just supplier expectations. 

What effective supplier engagement looks like 

In practice, stronger approaches tend to: 

• Focus on long-term relationships, not one-off interventions
• Combine clear expectations with practical support
• Integrate human rights into commercial decision-making
• Include worker voice and stakeholder engagement
• Be aligned with risk assessment and prioritisation 

Companies that adopt these approaches are more likely to see sustained improvements. 

Getting started 

If you are strengthening supplier engagement within HRDD: 

1. Identify priority suppliers based on risk
2. Review current engagement approaches and gaps
3. Align procurement and sourcing practices with human rights objectives
4. Introduce regular dialogue with key suppliers
5. Pilot deeper engagement in high-risk areas 

A focused, risk-based approach is more effective than trying to engage all suppliers equally. 

Continue building your HRDD approach 

To go further: 
Human rights due diligence: a complete guide for business
How to implement HRDD in your company
HRDD risk assessment for supply chains 

These resources help connect supplier engagement with broader due diligence systems. 

From compliance to collaboration 

Supplier engagement is where human rights due diligence becomes practical. 

Companies that move beyond compliance-driven models and invest in relationships, capacity, and alignment are better positioned to address root causes and deliver lasting improvements. 

The shift is from monitoring suppliers to working with them to manage risk and improve outcomes for workers.