The Corporate Sustainability Due Diligence Directive covers both human rights and environmental impacts, but it does not treat them identically. Understanding the differences in scope, depth, and the applicable international frameworks is essential for building a compliant due diligence programme.

What human rights obligations does CSDDD cover?

CSDDD's human rights obligations draw from the International Bill of Human Rights, the ILO fundamental conventions, and the UN Guiding Principles on Business and Human Rights. The Directive covers a defined list of adverse human rights impacts including child labour, forced labour, inadequate health and safety, restricted freedom of association, land rights violations, and excessive working hours.

The human rights due diligence obligation applies across the company's own operations, its subsidiaries, and the chain of activities of its business partners – both upstream (suppliers) and, in certain sectors, downstream (distributors and end users).

What environmental obligations does CSDDD introduce?

The environmental due diligence obligation is more specifically framed and draws from international environmental conventions. Companies must identify and address adverse environmental impacts defined by reference to specific conventions: the prohibition of mercury use under the Minamata Convention, the obligation to phase out persistent organic pollutants under the Stockholm Convention, and the prevention of significant harm to soil, water, and biodiversity under the Convention on Biological Diversity.

CSDDD also incorporates climate obligations through a separate transition plan requirement. Large companies must adopt and implement a climate transition plan aligned with the Paris Agreement goal of limiting global warming to 1.5°C. This is a planning and implementation obligation, not a due diligence obligation in the same sense.

How do the due diligence processes differ in practice?

Human rights impact identification relies primarily on stakeholder consultation, worker interviews, and engagement with civil society in affected communities. The qualitative and relational nature of the work requires genuine engagement rather than questionnaire-based supplier assessment.

Environmental impact identification relies more heavily on technical data – emissions measurements, soil and water quality monitoring, waste management records. The international benchmarks are more defined than in the human rights context, giving companies a clearer standard against which to assess their findings.

In both cases, the same six-step due diligence process applies. However, the practical methodology for conducting risk identification and the expertise required differ substantially between the two workstreams. Organisations should ensure their due diligence programmes draw on both human rights specialists and environmental technical expertise, rather than treating the obligation as a single unified workstream.

Does CSDDD add to existing environmental law obligations?

CSDDD is additive, not a substitute for existing environmental regulation. Companies subject to EU environmental directives – including the Industrial Emissions Directive, the Environmental Liability Directive, and sector-specific legislation – must comply with those frameworks independently. CSDDD adds a value chain dimension: the obligation to assess and address environmental impacts not only in the company's own operations but across its business relationships.

What this means for your organisation

  • CSDDD is not a single workstream. Human rights due diligence and environmental due diligence require different expertise, different data sources, and different engagement strategies. Treating them as one programme will create gaps in both.
  • The climate transition plan requirement is separate from the due diligence process and applies on its own timeline. It is an implementation obligation, not a risk identification exercise – organisations must demonstrate they are actually reducing emissions, not just planning to.
  • Existing environmental regulatory obligations are not displaced by CSDDD. The Directive adds a value chain dimension to compliance, requiring assessment of environmental impacts across business relationships, not only within the organisation's own operations.
  • Most organisations have more developed processes for human rights due diligence than for the specific environmental conventions referenced in CSDDD. The environmental workstream requires attention.

What you should do now

  1. Confirm which international environmental conventions are relevant to your sector and supply chain, and map your existing processes against the obligations they impose.
  2. Assess whether your current due diligence programme has the environmental technical expertise needed to identify impacts against the CSDDD environmental benchmarks.
  3. Review your climate transition plan for alignment with the 1.5°C Paris Agreement goal – CSDDD requires both adoption and implementation.
  4. Separate your human rights and environmental due diligence workstreams in your documentation, ensuring each has a distinct obligation register and risk analysis.
  5. Engage with your supply chain on environmental data – emissions, waste management, and substance use data from suppliers will be needed for a complete environmental risk assessment.

How Priventia helps

Priventia's Corporate Due Diligence module provides separate obligation registers for human rights and environmental workstreams under CSDDD, mapped to the applicable international conventions. Supplier risk assessments cover both dimensions, and the audit pack separates outputs by workstream for regulatory reporting.