Man climbing mountains traveling in Norway tourist solo hiking in Lofoten islands outdoor traveler with backpack active healthy lifestyle adventure summer vacations

Impact of Omnibus on the CS3D Regulation


The EU's Omnibus Simplification Package introduces key changes to the CS3D regulation by reducing the extent of the due diligence assessment needed.

This article was updated in January 2026 based on the latest developments.


In brief

  • The EU's Omnibus Simplification Package simplifies CS3D reporting by reducing due diligence on indirect partners and limiting SME information requirements.
  • Amendments to CS3D include a one-year delay to July 2029 for compliance, focusing due diligence on direct suppliers.
  • The amendments enhance competitiveness and sustainability by simplifying reporting, providing more preparation time, and fostering collaboration with suppliers.

Driving resilient and sustainable supply chains with CS3D at the horizon: Implications for Swiss businesses

Whilst the exponential rise in human rights due diligence regulations has brought human rights and environmental due diligence (HREDD) up the corporate agenda, the concept of supply chain due diligence dates back several decades. High-profile exposes of sweatshop labor in the apparel and electronics industries brought attention to unethical practices in supplier factories in the 1990s. After these events, formal frameworks for responsible business were defined by the UN Global Compact in 2000 and later by the UN Guiding Principles on Business and Human Rights (UNGP) as well as the revised OECD Guidelines for Multinational Enterprises in 2011. Today, these frameworks serve as the blueprint for HREDD and have since been adopted as the de facto methodology within global due diligence regulations, for example: the UK and Australia Modern Slavery Acts, the California Transparency in Supply Chains Act, the Transparency Act in Norway and, more recently, the Corporate Sustainability Due Diligence (CS3D) Directive.

CS3D recap

A key focus of CS3D is ensuring that companies address actual and potential adverse impacts. From a human rights perspective, examples include forced labor, child labor, as well as health and safety. From an environmental perspective examples include water pollution, biodiversity loss and carbon emissions. Our approach for adequately managing these adverse impacts is founded on due diligence guidance as proposed by the OECD Guidelines, and is summarized in the following four steps:

1. Identify and assess (potential adverse) human rights and environmental impacts
2. Prevent and mitigate to take appropriate action upon the findings
3. Track and monitor the effectiveness of measures taken
4. Communicate and report about measures taken and progress achieved

In order to adequately address risks and opportunities, these key elements should be integrated into companies’ policies and (compliance and risk) management systems, regardless of any specific compliance requirements and regulatory debates. The priority areas for HREDD should be risk-based and focused on the most significant business impacts. These should also be aligned with the outcomes of the double materiality assessment, and vice versa.

Amendments to the CS3D text as outlined in the final agreed EU Omnibus Simplification Package

The revisions are extensive, greatly reduce the need for due diligence assessments on indirect business partners and limit the information required from SMEs. The key changes, summarized in the following EY Thought Leadership and below, include: 

Please note that a review clause has been added, requiring that by July 2031, and every five years thereafter, the Commission should assess the effectiveness of the Directive, address adverse impacts and, if necessary, submit a legislative proposal.

What happens next?

Whilst the Omnibus revision may present a regulatory relief for companies out of scope, there is no doubt that a strong due diligence program remains the basis for better risk management, operational efficiency and a demonstrable competitive edge.

Beyond compliance, using insights gained from CS3D-compliant due diligence programs enables organizations to proactively identify and mitigate ESG risks, meet the needs of institutional investors, and ultimately improve cost of capital. 

HREDD no-regret actions for Swiss businesses

The further delay of CS3D provides an opportunity for businesses to better prepare and enhance existing efforts in building comprehensive and robust due diligence approaches. 

Companies that take advantage of this additional preparation time by beginning to build programs early will be ready to meet increasing expectations from regulators, investors and broader stakeholders – and build a business that can deliver strong financial and social returns. 

Companies should look to establish resilient supply chains and ensure they build on existing work already taken through compliance with CSRD and other due diligence regulations (such as the EU Deforestation Regulation (EU DR) and EU Forced Labour Directive (EU FL), thus avoiding duplicative compliance efforts. For large companies, EY recommends the following no-regret actions:

The priority areas for HREDD should be risk-based and focused on the most significant business impacts. These priorities should also be aligned with the outcomes of double materiality assessments (DMA) (if available) and, conversely, any DMAs should be informed by the due diligence performed and its respective findings. We further recommend aligning the general due diligence approach with sector-specific requirements, e.g., on deforestation, forced labor or conflict minerals.

 

Our four-step approach can help organizations at any stage of maturity advance in their HREDD journey, fill the respective gaps to move to compliance with the CS3D and adequately manage risks. EY has extensive experience in supporting mature organizations in implementing robust action plans and monitoring systems as well as in assisting nascent companies in assessing their current state through comprehensive readiness assessments.

Driving resilient and sustainable supply chains with CS3D at the horizon: Implications for Swiss businesses

This brochure summarises EY Switzerland's Four Step Approach to Human Rights and Environmental Due Diligence (HREDD). Download to understand how we can help you in your journey to better manage human rights or environmental risks in your supply chain.

EY Webcast: Omnibus simplification package

In our webcast, you will learn how the European Union’s Omnibus Simplification Package aims to streamline sustainability reporting. This legislative initiative represents a significant milestone in the journey towards enhanced competitiveness. We will also present initial insights and recommendations that will help companies prepare for future challenges.

Summary

The EU Omnibus Simplification Package represents a significant step towards simplifying due diligence requirements, particularly regarding CS3D. By providing businesses with more time to prepare, reducing the scope of reporting, and focusing on material activities, the package aims to enhance competitiveness and support the transition to a sustainable and inclusive European economy. As the legislative process unfolds, businesses should stay informed and actively engage with stakeholders to navigate the challenges ahead and identify and address human rights and environmental impacts in their operations.

Acknowledgment

We thank Angharad Weatherall for her valuable contributions to this article.


Related articles

Understanding the EU Omnibus proposal: key insights and resources

Learn more about the recently announced EU Omnibus proposal.

EY Webcast: Omnibus simplification package – Way forward on Sustainability Reporting and Due Diligence

The Omnibus Simplification Package (“Omnibus”) is part of the European Commission's commitment to reduce wider sustainability reporting burdens.

Navigating the EU Omnibus Simplification Package - CBAM

Discover the changes to the CBAM regulation under the EU Omnibus Simplification Package and learn how companies can prepare for compliance.

Impact of Omnibus on the EU Taxonomy Regulation

Learn about the EU Omnibus Simplification Package and its impact on Taxonomy Regulation for better compliance and sustainability.

Navigating the EU Omnibus Simplification Package: CSRD

Explore the key aspects of CSRD and the EU Omnibus Simplification Package. Learn about the new reporting requirements, the phased implementation, and the proposed amendments aimed at simplifying sustainability reporting.

Strengthening Nature Risk Management in Swiss Finance

Learn how our Financial Services teams can help you embed nature-related financial risks in your organization.

CSRD technical resources

Our CSRD and ESRS technical resources provide guidance, tools, and insights for sustainability reporting standards.


    Explore Climate change & sustainability services

    Our multidisciplinary teams can help companies understand the risks and opportunities arising from climate change and sustainability issues.

    Brazil town from sky


    About this article

    Authors

    Request for proposal (RFP) - exclusively for Switzerland

    |

    Submit your request now!