First things first: what is the CSDDD?

The Corporate Sustainability Due Diligence Directive (CSDDD) is a comprehensive law that enforces respect for human rights and the environment across entire supply chains. Unlike previous sector-specific or voluntary due-diligence laws of individual EU member states, the CSDDD imposes binding requirements on a broad group of companies — and creates a harmonised approach to corporate sustainability across the EU.

Who is affected?

The CSDDD applies to both EU and non-EU companies operating in the EU. Concretely it addresses:

  • EU companies with more than 500 employees and over €150m turnover.
  • EU companies with more than 250 employees and over €40m turnover, if 50% of revenues come from high-risk sectors such as fashion, minerals or agriculture.
  • Non-EU companies with the same turnover thresholds, generated in the EU.

Around 13,000 EU companies and 4,000 non-EU companies are expected to fall in scope. The financial sector is currently exempt from the CSDDD — despite existing sectoral guidelines from the OECD (Organisation for Economic Co-operation and Development).

What do companies need to do?

Under the CSDDD, companies must:

  1. Identify negative impacts: detect material environmental and human-rights impacts in their own operations, subsidiaries and supply chains.
  2. Address risks: implement an action plan with a timeline to manage identified risks.
  3. Set up grievance mechanisms: provide channels through which employees and stakeholders can raise concerns.
  4. Integrate climate targets: align business strategy with the 1.5 °C goal of the Paris Agreement — especially for larger companies.
  5. Report publicly: disclose due-diligence efforts in sustainability reports or on the website.

Implementation timeline

Once the CSDDD is formally adopted, EU member states have two years to transpose the directive into national law. The requirements come into force in stages:

  • By 2027 for companies with over 5,000 employees and €1.5bn turnover.
  • By 2028 for companies with over 3,000 employees and €900m turnover.
  • By 2029 for companies with over 1,000 employees and €450m turnover.

Enforcement and oversight

National supervisory authorities enforce compliance via several routes:

  • Investigations and inspections: authorities may investigate and audit companies suspected of breaching the directive.
  • Administrative penalties: breaches can be sanctioned with fines of up to 5% of global annual turnover.
  • Civil liability: individuals and organisations can claim damages if they have been harmed by non-compliance with the requirements.

Outlook

The CSDDD is a decisive step in embedding responsible business practices across the EU. It harmonises due-diligence standards and creates a level playing field for all companies in the EU market. As member states work on transposing it into national law, companies should start preparing for these new requirements — and contribute to a more sustainable, more responsible global economy.

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