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EU Corporate Due Diligence Rules: What the Omnibus Changes Mean

Published on February 18, 2026

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In 2024, the European Union (EU) enacted the Corporate Sustainability Due Diligence Directive (CS3D) to establish mandatory human rights and environmental due diligence obligations for large companies operating in the EU. The directive marked an expansion of EU sustainability regulation, extending compliance requirements beyond European borders to multinational enterprises (MNEs) conducting substantial business in the EU.

In December 2025, following extensive debate about the regulatory burden, the risk of significant penalties, and potential constraints on global competitiveness, the EU adopted a package of “Omnibus” amendments that revised both the scope and requirements of CS3D. These amendments were intended to reduce compliance burdens, sharpen the focus on the largest companies, and limit downstream impacts on smaller firms, while preserving the directive’s core objectives of responsible business conduct. Despite these changes, many U.S. policymakers, companies, and other stakeholders are concerned by the extraterritorial nature of the regulation, which was not addressed in the revised text. This Basic, an update to a previously published edition, will outline the latest “Omnibus” modifications, remaining challenges associated with the CS3D, and the U.S. legislative and regulatory implications.

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