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Understanding the CSDDD: Key Changes & Compliance Guide for EU Companies

Written by Johannes Fiegenbaum | 5/26/25 8:31 AM

The CSDDD (Corporate Sustainability Due Diligence Directive) has introduced new EU-wide requirements since July 25, 2024, aimed at better protecting human rights and the environment throughout the entire supply chain. The CSDDD was published in the EU Official Journal on July 25, 2024. However, member states must transpose it into national law by July 26, 2026. Implementation and interpretation may therefore vary by country. Companies are required to comply with stricter due diligence obligations, report more comprehensively, and develop climate transition plans aligned with the 1.5-degree target of the Paris Agreement. Notably, the CSDDD is considered a landmark in global supply chain regulation, setting a new standard for corporate accountability and transparency, as highlighted by the European Commission (https://ec.europa.eu/commission/presscorner/detail/en/ip_24_3931).

Key Changes:

  • Expanded Supply Chain Rules: Applies to upstream, downstream, and indirect suppliers, broadening the scope compared to previous legislation.
  • Civil Liability: Companies can be held liable for violations, providing affected parties with legal recourse in EU courts.
  • Sanctions: Fines of up to 5% of global annual turnover, a significant increase over prior frameworks.
  • New Thresholds: From 2027, applies to companies with >5,000 employees and €1.5 billion turnover, with gradual expansion through 2029.
  • Reporting Obligations: Harmonized with the CSRD, including a climate transition plan.

Comparison: CSDDD vs. LkSG:

Aspect CSDDD LkSG
Climate Protection Focus Very strong Less strong
Supply Chain Upstream & Downstream Upstream only
Liability Civil liability None
Fines Up to 5% of annual turnover Set lower

Companies should adapt their ESG strategies now to meet the new requirements and avoid sanctions. Early adaptation is especially important as enforcement is expected to be rigorous, with national authorities empowered to investigate and sanction non-compliance (https://www.lexology.com/library/detail.aspx?g=5b9e9e9e-5c2d-4c6e-8e7e-0e3e4f7b3c1e).

EU CSDDD Explained - Risk Assessment and Appropriate Measures

Main Changes in the Omnibus Amendments

The Omnibus amendments focus on three core areas: stricter due diligence obligations, harmonized reporting requirements through the CSRD, and expanded supply chain rules. These amendments reflect a broader trend in the EU towards integrating sustainability into the core of corporate governance (https://www.euractiv.com/section/sustainability/news/eu-adopts-corporate-sustainability-due-diligence-directive/).

New Due Diligence Obligations

The CSDDD significantly tightens due diligence requirements compared to the LkSG. From July 26, 2027, the new rules apply to companies with more than 5,000 employees and net turnover exceeding €1.5 billion. These thresholds will be gradually lowered:

Date Employees Minimum Turnover
26.07.2027 > 5,000 €1.5 bn
26.07.2028 > 3,000 €900 m
26.07.2029 > 1,000 €450 m

Companies must implement a comprehensive due diligence process covering risk identification, preventive measures, and control mechanisms to ensure effectiveness. In addition, a complaints mechanism must be established that is accessible at all stages of the value chain. These requirements are incorporated into the compliance checklist in the next chapter. According to the European Coalition for Corporate Justice, these mechanisms are designed to empower affected communities and workers, increasing the effectiveness of redress (https://corporatejustice.org/news/eu-corporate-sustainability-due-diligence-directive-adopted/).

Connection to Other EU Regulations

The CSDDD aligns reporting requirements with the CSRD to avoid double reporting. It also requires the creation of a climate transition plan that aligns with the 1.5°C target—a requirement not included in the LkSG. This alignment is expected to streamline compliance for companies already subject to the CSRD and other EU sustainability frameworks (https://www.csrwire.com/press_releases/792731-eu-adopts-corporate-sustainability-due-diligence-directive).

Supply Chain Rules

The CSDDD expands the concept of the “chain of activities” to include upstream, downstream, and indirect suppliers. In contrast, the LkSG is limited to direct suppliers. This broader scope means companies must map and manage risks not just in their immediate suppliers but throughout their value chain, including product use and disposal (https://www.osborneclarke.com/insights/eu-corporate-sustainability-due-diligence-directive-adopted).

Aspect CSDDD Requirement Practical Implementation
Scope Upstream and downstream Covers the entire value chain
Due Diligence Equal treatment of direct and indirect suppliers Broader risk management
Liability Civil liability for violations Stronger control mechanisms
Sanctions Up to 5% of global annual turnover Robust compliance systems

Experts recommend using the next two years to adapt internal compliance procedures. In 2023, the BAFA reviewed 486 cases under the LkSG, indicating increased scrutiny. The expanded requirements make it necessary to adjust risk management and supply chain communication. A recent study by the European Centre for Development Policy Management highlights that companies with robust supplier engagement and traceability systems are better positioned to meet these new obligations (https://ecdpm.org/work/corporate-sustainability-due-diligence-directive).

These changes lay the foundation for upcoming ESG strategy updates and the compliance checklist.

Criticism and Open Questions
Despite the generally welcomed goal of the CSDDD—to strengthen human rights and environmental protection—there are also critical voices. Business associations fear increased legal uncertainty and bureaucracy, especially due to civil liability. This is considered difficult to integrate into international supply chains, where European companies have only limited influence. Some legal experts also see risks from competing rights to sue in different EU member states. According to a Financial Times analysis, these concerns are prompting calls for clear guidance and harmonized enforcement across the EU to prevent fragmentation.

ESG Strategy Updates for German Companies

German companies are currently adapting their processes to meet the requirements of the CSDDD (Corporate Sustainability Due Diligence Directive). These adjustments mainly affect risk management, supply chain communication, and reporting obligations. According to a survey by PwC Germany, over 60% of large German firms have already started to review their supply chain risk frameworks in anticipation of the CSDDD (https://www.pwc.de/en/sustainability/csddd.html).

Changes in Risk Management

The CSDDD expands the focus of risk analysis to the entire value chain—from production to use. A key point is the integration of climate risks into existing risk management systems.

Key aspects of the new approach:

  • Comprehensive assessment of human rights, environmental, and climate risks
  • Creation of a climate transition plan supporting the 1.5-degree target
  • Biennial review of measures for effectiveness

Additionally, collaboration with stakeholders within the supply chain will be intensified. This is consistent with recommendations from the OECD Due Diligence Guidance for Responsible Business Conduct, which emphasizes stakeholder engagement as a best practice (https://www.oecd.org/corporate/mne/due-diligence-guidance-for-responsible-business-conduct.htm).

New Requirements for Supply Chain Communication

The CSDDD requires companies to make communication along the supply chain more transparent and accessible. Two key measures are:

  • Introduction of a publicly accessible complaints mechanism for all stakeholders along the value chain
  • Active involvement of stakeholders, including trade unions and employee representatives

Reporting Obligations and Sanctions

Companies must provide detailed information on their due diligence measures in their annual reports. These reports must include:

  • Measures to ensure compliance with due diligence obligations
  • Progress on the climate transition plan regarding the 1.5-degree target
  • Results of regular effectiveness reviews

Non-compliance can result in severe penalties of up to 5% of global annual turnover. The European Parliament has stressed that these sanctions are intended to create a strong deterrent effect and ensure meaningful compliance (https://www.europarl.europa.eu/news/en/press-room/20240419IPR20509/corporate-sustainability-due-diligence-parliament-adopts-new-eu-law).

Due Diligence as a Competitive Advantage

Companies that view due diligence not just as a regulatory obligation but as a strategic tool can benefit in the medium term. Transparent supply chains, credible climate action, and effective stakeholder engagement strengthen trust among customers, investors, and employees. Research by McKinsey & Company indicates that firms with mature ESG and due diligence practices outperform peers in risk mitigation and brand reputation (https://www.mckinsey.com/capabilities/sustainability/our-insights/the-esg-premium-new-perspectives-on-value-and-performance).

Implementation Guide

This guide outlines CSDDD compliance implementation in three clear phases and presents suitable tools.

Compliance Checklist

Compliance with CSDDD requirements takes place in three main steps:

  1. Preparation Phase
    By July 26, 2026, companies adapt their internal processes and compliance structures. Key tasks include:
    • Conducting risk assessments and developing preventive measures
    • Implementing monitoring systems, communication strategies, and remediation mechanisms (e.g., effectiveness reviews, public reports, complaints mechanisms)
    • Existing management systems such as ISO 26000, EMAS, or SA8000 can serve as a foundation and help systematically integrate requirements.
  2. Implementation Phase
    In this phase, companies put planned measures into practice:
    • Developing a climate transition plan that supports the 1.5-degree target
    • Setting up an easily accessible complaints system
  3. Review Phase
    Every two years, companies assess the effectiveness of their measures, document progress, and adjust strategies. At the same time, they prepare annual reporting in line with the CSRD.

These steps form the basic framework. For timely and efficient implementation, professional support is recommended.

Fiegenbaum Solutions Services

Fiegenbaum Solutions offers support in the following areas:

Data Management Systems

Risk Management

  • Capture, assess, and track risks

Reporting Tool

  • Automated data collection and creation of CSRD-compliant reports

Complaints Mechanism

  • Documentation of complaints and tracking of actions taken

Overview of Changes

The Omnibus amendments introduce five main changes:

Criterion CSDDD (Omnibus)
Geographical Scope EU and beyond
Chain-of-Activities Concept Includes all, including indirect and downstream suppliers
Civil Liability Newly introduced
Accessible Complaints Mechanism Mandatory for all affected parties
Sanctions Up to 5% of global annual turnover

In comparison, the German Supply Chain Due Diligence Act (LkSG) is limited to direct suppliers, with no civil liability or mandatory accessible complaints systems.

In the next section, we explain how you can effectively implement these changes in practice.

Next Steps for German Companies

Here are concise recommendations for final implementation:

Key Focus Areas

Central tasks include: human rights and environmental due diligence procedures, developing a climate transition plan in line with the 1.5-degree target, integrating all suppliers into risk management, reporting according to CSRD standards, and establishing accessible complaints procedures.

A structured approach can be implemented using the checklist from the implementation guide. Companies should review and adapt their ESG strategies. Especially crucial is risk management that is updated every two years and as needed.

Support from Experts

If internal resources are insufficient, consider specialized consulting services. You’ll find details on available support in the section "Fiegenbaum Solutions Services."

FAQ

Here I answer the most frequently asked questions about implementing the CSDDD in Germany.

Compliance Deadlines

The CSDDD came into force on July 25, 2024. Member states had to transpose it into national law by July 26, 2026. The staggered thresholds apply from 26.07.2027, 26.07.2028, and 26.07.2029 (see the “New Due Diligence Obligations” section for details).

Affected Companies

The regulation applies to both domestic and foreign companies that meet the relevant thresholds. Companies in manufacturing, textile and food retail, agriculture, forestry and fisheries, and raw materials extraction are particularly affected. Franchise and licensing companies with turnover over €80 million or license fees from €22.5 million are also subject to the CSDDD. The European Commission provides a detailed breakdown of affected sectors and company types (https://ec.europa.eu/info/business-economy-euro/company-reporting-and-auditing/company-reporting/corporate-sustainability-due-diligence_en).

Requirements and Measures

To comply, existing LkSG measures should be adapted to CSDDD standards. This includes introducing a climate transition plan with at least biennial effectiveness reviews. Violations can result in fines of up to 5% of global turnover. An accessible complaints mechanism and regular reporting are also mandatory.

How does the CSDDD differ from other international laws and standards such as the UK Modern Slavery Act or the UN Guiding Principles on Business and Human Rights?

The CSDDD goes beyond the LkSG by covering both upstream and downstream supply chains, while the LkSG is limited to direct suppliers. The CSDDD provides for civil liability, which the LkSG lacks, and can impose fines of up to 5% of annual turnover. Additionally, the CSDDD places a much stronger emphasis on climate protection, which is less pronounced in the LkSG. Compared to the UK Modern Slavery Act, which focuses primarily on forced labor and human trafficking, the CSDDD covers a broader range of human rights and environmental issues and introduces enforceable obligations with significant penalties (https://www.twobirds.com/en/insights/2024/global/comparing-the-eu-csddd-and-the-uk-modern-slavery-act).

Which specific sectors are most affected by the CSDDD, and what special risks apply to these sectors?

Companies in manufacturing, textile and food retail, agriculture, forestry and fisheries, and raw materials extraction are particularly affected. These sectors are considered high-risk due to complex global supply chains, frequent subcontracting, and exposure to environmental and human rights challenges. For example, the textile sector faces risks related to labor rights and environmental pollution, while agriculture and mining are exposed to land use and biodiversity concerns (https://www.business-humanrights.org/en/latest-news/eu-corporate-sustainability-due-diligence-directive-csddd/).