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OECD Due Diligence Guidance and How the CSDDD Maps Onto It

Last updated · 2026-06-08

The OECD Due Diligence Guidance for Responsible Business Conduct is the international standard that the EU Corporate Sustainability Due Diligence Directive (CSDDD) is built on. It sets out a practical, six-step process for managing human rights, labour, environmental and governance impacts, and the CSDDD deliberately mirrors it.

TL;DR

  • The OECD Due Diligence Guidance for Responsible Business Conduct is the global reference standard for due diligence.
  • It accompanies the OECD Guidelines for Multinational Enterprises and operationalises the UN Guiding Principles.
  • It describes a six-step, risk-based due diligence cycle.
  • The CSDDD maps closely onto this framework, giving it legal force in the EU for the largest companies.
  • The OECD also publishes sector-specific guidances (for example garment and footwear, minerals, agriculture, finance).
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In plain English

What oecd due diligence guidance means

The OECD Guidelines for Multinational Enterprises are recommendations from governments to companies on responsible business conduct. The Due Diligence Guidance is the companion handbook that explains, step by step, how to carry out the due diligence the Guidelines expect. Together they form the most widely used international framework for responsible business conduct.

How this fits the CSDDD

The OECD Due Diligence Guidance is the framework the CSDDD six-step cycle is modelled on, referenced throughout Directive (EU) 2024/1760. Directive (EU) 2024/1760 Omnibus I (Directive (EU) 2026/470)

Why it matters

Why oecd due diligence guidance matters under the CSDDD

  • It is the framework the CSDDD is modelled on, so it is the clearest guide to what good due diligence looks like.
  • Companies already aligned with the OECD process are largely aligned with the CSDDD.
  • It provides practical, sector-specific guidance that the directive itself does not spell out.
  • It connects the CSDDD to the wider, globally recognised responsible business conduct movement.

The detail

The OECD framework in brief

The Due Diligence Guidance describes a six-step cycle: embed responsible business conduct into policies and management systems; identify and assess adverse impacts; cease, prevent and mitigate; track implementation and results; communicate; and provide for or cooperate in remediation.

It is risk-based and proportionate: companies prioritise the most severe and likely impacts and scale their efforts to the risk.

How the CSDDD maps onto the OECD steps

The CSDDD six steps line up closely with the OECD cycle: embedding policy, identifying and assessing impacts, preventing and mitigating, bringing impacts to an end and remediating, stakeholder engagement and complaints, and monitoring and communicating.

Because the alignment is deliberate, the OECD Guidance is a reliable practical companion to the directive, even where the CSDDD text is high-level.

OECD sector guidances

Beyond the general guidance, the OECD publishes sector-specific guidance, for example for the garment and footwear sector, minerals supply chains, agricultural supply chains and the financial sector.

These are valuable for tailoring your due diligence to the specific risks of your industry, complementing the cross-sector CSDDD obligations.

For the underlying standards, see the OECD Due Diligence Guidance and the UN Guiding Principles on Business and Human Rights.

Watch out

Common pitfalls

  • Assuming the CSDDD invented due diligence; it codifies a long-standing OECD and UNGP framework.
  • Ignoring the OECD sector guidances that translate the cycle to your specific industry risks.
  • Reading the OECD steps as optional best practice once the CSDDD applies to you; they are how you meet the legal duty.

Put it into practice

Ready to act on this? Start with our free due diligence questionnaire to see what a customer can ask you for, check whether you are directly in scope with the scope checker, score your suppliers with the risk-assessment tool, and look up any unfamiliar term in the glossary. For the full picture of the directive, read what the CSDDD is.

FAQ

OECD Due Diligence Guidance: common questions

What is the OECD Due Diligence Guidance?
It is the OECD handbook that explains, step by step, how companies should carry out due diligence on human rights, labour, environmental and governance impacts. It accompanies the OECD Guidelines for Multinational Enterprises and operationalises the UN Guiding Principles.
How does the CSDDD relate to the OECD Guidance?
The CSDDD is deliberately built on the OECD framework. Its six-step due diligence cycle mirrors the OECD cycle, so companies already following the OECD Guidance are largely aligned with the directive. The CSDDD adds binding legal force in the EU.
Are there OECD sector guidances?
Yes. The OECD publishes sector-specific due diligence guidance, including for garment and footwear, minerals, agriculture and the financial sector. These help you tailor the general framework to your industry's specific risks.
Is the OECD Guidance legally binding?
The OECD Guidelines are government recommendations rather than binding law on their own. The CSDDD, however, makes equivalent due diligence a legal obligation for the largest companies in the EU market, so for those companies the framework carries legal weight.

Related topics

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human rights due diligence

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ethical supply chain

Ethical Supply Chain

An ethical supply chain is one where the people and environment behind your products are treated fairly and protected from harm. The EU Corporate Sustainability Due Diligence Directive (CSDDD) turns this long-standing aspiration into a legal duty for the largest companies, and pushes its expectations down to suppliers of every size.

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Get ahead of the CSDDD

If a big customer has sent you a due diligence questionnaire, our free DDQ shows what you actually need to send. Then explore the tools and guides built for your role.

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This is guidance, not legal advice

This page explains how oecd due diligence guidance works under the CSDDD in plain English. It is guidance, not legal advice. For decisions specific to your business, confirm with the official sources we link or a qualified adviser. The directive is still settling after Omnibus I, so we keep this page current.

Sources

  1. [1]Directive (EU) 2024/1760 (CSDDD / CS3D), original text (EUR-Lex)retrieved 8 Jun 2026
  2. [2]Omnibus I final amending act (Directive (EU) 2026/470): CSDDD amendments finalisedretrieved 8 Jun 2026
  3. [3]Clifford Chance: Omnibus I concludes CSDDD and CSRD reformsretrieved 8 Jun 2026
  4. [4]European Commission: Corporate sustainability due diligenceretrieved 8 Jun 2026
  5. [5]OECD Due Diligence Guidance for Responsible Business Conductretrieved 8 Jun 2026
  6. [6]UN Guiding Principles on Business and Human Rightsretrieved 8 Jun 2026

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