The EU's Omnibus I Directive entered into force in March 2026, fundamentally rewriting the Corporate Sustainability Due Diligence Directive by cutting its scope by roughly 70 percent, restricting in-depth due diligence to Tier 1 suppliers, and pushing full application to July 2029. With the original transposition deadline passing this month and a public consultation on implementation guidelines closing 24 July, mineral supply chain actors face a compressed window to shape how these obligations will work in practice.
Introduction
Two dates this month matter enormously for anyone working in critical mineral supply chains. The first is 26 July 2026, the original deadline by which EU member states were supposed to have transposed the Corporate Sustainability Due Diligence Directive into national law. That deadline has been superseded by the Omnibus I amendments, but its arrival is a useful forcing function: it marks the moment when the gap between what the CSDDD was supposed to require and what it now actually requires becomes impossible to ignore. The second is 24 July 2026, the closing date for the European Commission's public consultation on CSDDD implementation guidelines. That consultation will directly shape how supervisory authorities, courts, and companies understand what due diligence looks like in practice.
This matters to a specific but wide audience. Mining companies, mineral processors, battery manufacturers, and the large industrial firms that sit at the end of critical mineral supply chains all face a fundamental question: what does responsible sourcing actually require of them under the law as it now stands? The answer is more complicated, and more contested, than the headlines about simplification suggest.
The Omnibus I Directive (EU) 2026/470 was published in the Official Journal on 26 February 2026 and entered into force on 18 March 2026. It dramatically narrowed the CSDDD's reach, cut its penalty ceiling, deleted its civil liability regime, and removed the mandatory climate transition plan requirement. But it did not abolish the directive. What remains is a legally binding due diligence framework that still reaches thousands of large companies with global supply chains, including the ones that buy lithium from Chile, cobalt from the Democratic Republic of Congo, and rare earths processed overwhelmingly in China.
What the Omnibus I Amendments Actually Changed
The original CSDDD was designed to apply to roughly 13,000 companies. The Omnibus I amendments cut that number to approximately 6,000, a reduction of around 70 percent. The new thresholds require both a headcount above 5,000 employees and a worldwide net turnover above 1.5 billion euros. For non-EU companies, the threshold is turnover generated in the EU market exceeding 1.5 billion euros. Separate rules apply to franchisors and licensors above certain royalty and turnover thresholds.
The change to who must comply is significant, but the change to what compliance requires is arguably more consequential for supply chain practice. Under the original directive, companies were expected to map and address adverse human rights and environmental impacts across their full chains of activity. The Omnibus amendments introduced a two-step approach: a scoping exercise based on reasonably available information, followed by in-depth assessment in areas identified as most likely and most severe. Crucially, mandatory in-depth due diligence now applies only to Tier 1 suppliers by default.
Tier 2 suppliers and beyond come into scope only when a company has what the directive calls plausible information of an adverse impact further up the chain. The directive defines five specific triggers for this: complaints received through the company's grievance mechanism; credible media or NGO reports about a known supplier location; documented incidents at a specific site; recurring problems at the same locations or supplier networks; and business structures that lack economic rationale, suggesting deliberate concealment of sub-contracting arrangements. The plausible information threshold is deliberately qualitative, requiring a reasonable basis for concern rather than proof.
Several other significant changes accompanied the Tier 1 restriction. The requirement to adopt and implement a climate transition plan was deleted entirely, though the CSRD obligation to disclose a plan if one exists was retained. The harmonised EU-wide civil liability regime was removed, leaving member states without a common legal standard for victims seeking redress. Penalty caps were reduced: the maximum fine may not exceed 3 percent of global net turnover, down from a floor of at least 5 percent under the original text. The obligation to terminate business relationships when adverse impacts cannot be resolved was also removed.
Why the Tier 1 Restriction Is the Central Controversy for Mining and Mineral Processing
For critical mineral supply chains, the Tier 1 restriction is not a minor technical adjustment. It cuts directly against the structure of how minerals actually move from the ground to the consumer.
Consider copper as an example. It is typically mined in countries like Peru or Chile, shipped to smelters in China for processing and refining, and then enters the EU market as semi-finished wire or alloy incorporated into industrial products. By the time copper arrives at a large European manufacturer's direct supplier, its highest-risk stages, extraction and processing, are already two or three tiers back in the chain. Under the Omnibus amendments, that manufacturer would only be obliged to conduct in-depth due diligence at the Tier 1 level unless plausible information of an adverse impact at an earlier stage triggered further investigation.
Research from the Centre for Research on Multinational Corporations (SOMO) makes the structural problem concrete. In supermarket supply chains, only nine percent of Tier 1 suppliers are estimated to be covered by the CSDDD themselves, meaning they have their own legal obligations to manage risks. For the other 91 percent, the in-scope company is the only entity in the chain legally required to look. The Omnibus also introduced a value-chain cap that generally prevents in-scope companies from demanding information beyond a standardised set from partners with fewer than 5,000 employees, effectively shielding the vast majority of suppliers from meaningful data requests.
This creates a structural blind spot that is particularly acute for extractive sectors. Mining and initial mineral processing carry some of the most severe and irreversible environmental and human rights risks in any supply chain: land displacement, water contamination, tailings failures, child labour, and violence against communities and environmental defenders. These impacts are inherently difficult to remediate once they occur. A due diligence framework that concentrates scrutiny at Tier 1 tends, by design, to miss the most dangerous nodes. As one framing puts it: due diligence on extractive nodes should weigh irreversibility differently from reversible value-chain risk. An impact that cannot be undone is among the most severe by definition.
The Omnibus amendments also narrowed the category of stakeholders companies must consult during their due diligence process. National and international organisations defending the environment and human rights are now excluded unless they directly represent affected local communities. Critics argue this change is especially damaging in contexts, such as parts of sub-Saharan Africa, where affected communities may lack the technical capacity to anticipate and identify potential harms without specialist support.
Critics, Defenders, and the Contested Politics Behind the Rollback
The political story behind Omnibus I is as important as the legal text. The European Commission's February 2025 simplification proposal came directly after the Draghi report on European competitiveness and the Budapest declaration calling for a simplification revolution. At the May 2025 Choose France summit, President Macron called for the CSDDD to be taken off the table entirely, not merely postponed. German Chancellor Friedrich Merz said he would revoke Germany's national Supply Chain Act and expected the EU to cancel the directive. In October 2025, 46 European CEOs led by TotalEnergies and Siemens wrote to Macron and Merz urging abolition.
The final Omnibus I text did not go that far. But civil society organisations did not regard what emerged as a compromise in any meaningful sense. Over 360 civil society organisations from 53 countries signed a joint statement urging the Council and Parliament to reject amendments that weaken the directive. The European Coalition for Corporate Justice described the final outcome as severely weakening the law, slashing human rights and environmental protections, and gutting corporate climate obligations. Human Rights Watch's Helene de Rengervé stated that the final text means corporate interests are being prioritised over the rights of workers, communities, and environmental protection.
Not all business voices were on one side. More than 100 large companies including Maersk, H&M Group, Scania, and Aldi Sud endorsed the CSDDD at the stage of formal Council confirmation. Twenty-one German companies including Otto, Tchibo, and Ritter Sport wrote to Chancellor Merz describing the proposed abolition as counterproductive and calling for strong and reliable standards. These companies had already invested in building due diligence programmes and argued that weakening the law created competitive disadvantage for early movers.
The process itself attracted formal scrutiny. The European Ombudswoman found in November 2025 that the Commission had committed maladministration in preparing the Omnibus I package, citing failure to fully justify the urgency of the proposals and failure to document deviations from Better Regulation rules. The Commission broadly agreed to implement her recommendations, and the Ombudsman closed the cases in June 2026. The finding does not invalidate the directive, but it adds a procedural shadow over a legislative process that moved very quickly by EU standards.
The Live Policy Window: What the Consultation Means and Why Mineral Actors Should Engage
The public consultation the Commission launched on 12 June 2026 closes on 24 July 2026. Its subject is the development of implementation guidelines for the CSDDD, and it deserves more attention from the mining and mineral processing sector than it has so far received.
The guidelines will be non-binding, but that word understates their practical importance. Supervisory authorities across the EU are expected to refer to them when assessing whether companies have met their due diligence obligations. Courts will likely treat them as authoritative reference points. The Commission plans to adopt a first set of guidelines in the first quarter of 2027, covering risk identification and prioritisation, appropriate measures, responsible disengagement, stakeholder engagement, available data sources, and model contractual clauses. A second set, covering information-sharing and stakeholder protection, follows by July 2028.
The consultation questionnaire asks detailed questions about what counts as reasonably available information, which risk factors should be taken into account at different supply chain tiers, how companies should identify indirect business partners, and what digital tools work in practice. These are not abstract questions. The answers will determine, for example, whether a lithium refiner in a third country that processes ore from a conflict-affected region is treated as automatically triggering the plausible information threshold, or whether a downstream battery manufacturer needs a credible media report before it is obliged to look.
Companies that have already built due diligence programmes, whether under the French loi de vigilance, the German Supply Chain Act (LkSG), or voluntary frameworks aligned with the OECD Guidelines for Responsible Business Conduct, are in a strong position to provide concrete, evidence-based input. The consultation is open to companies, business associations, investors, civil society organisations, public authorities, and trade unions. Individual submissions, coordinated through industry associations or submitted directly, can put practical realities into the record before the Commission drafts its guidance. The window is narrow: it closes in two weeks.
As noted in my coverage of the EU Forced Labour Regulation in July 2026, one of the clearest lessons from that instrument is that the drafting of implementation guidance and enforcement priority documents is where regulatory theory meets operational reality. The CSDDD consultation is the equivalent moment for the due diligence framework.
Compliance Planning: What In-Scope Companies Should Be Doing Now
The single application date for the amended CSDDD is 26 July 2029. Member states have until 26 July 2028 to transpose the Omnibus I amendments into national law. That sounds distant, but the compliance architecture needs to be built well before the law switches on.
The core due diligence obligations the Omnibus left intact are not trivial. In-scope companies still need documented policies, a functioning mechanism to identify and assess actual and potential adverse impacts, a prioritisation process, appropriate mitigation and corrective action measures, a grievance and complaints mechanism, meaningful stakeholder engagement, ongoing monitoring, and an annual public communication on due diligence outcomes. The Omnibus narrowed the scope, but it did not simplify what a robust due diligence programme looks like for a company that is in scope.
For the mineral supply chain specifically, the most urgent compliance planning task is mapping which Tier 1 business partners actually supply minerals or mineral-containing inputs, and then stress-testing the five triggers for deeper investigation. That stress test should be honest: high-risk country exposure, documented civil society reports about specific mine sites or processing facilities, and opaque sub-contracting arrangements in regions where artisanal mining is common are all likely to generate plausible information obligations well before a company would prefer to investigate. Waiting for a credible media report to force a Tier 2 review is a compliance strategy that carries significant reputational and legal exposure.
The German situation adds a short-term complication. The Federal Office for Economic Affairs and Export Control (BAFA), which supervises the German Supply Chain Act, has suspended review of corporate reports and announced it will not take enforcement action against LkSG violations until the transposed CSDDD is in place. That suspension removes an immediate enforcement pressure, but it does not change the underlying legal obligation, and it creates a false sense of regulatory breathing room for companies that still need to be in compliance shape by 2029.
The broader compliance risk is what might fairly be called regulatory transition risk: companies are investing in governance systems while the governing architecture is still being shaped by guidelines not yet written and by member state transposition choices not yet made. The consultation closing on 24 July is the most direct available tool for reducing that uncertainty.
What Comes Next
The immediate horizon holds two firm dates. The consultation closes 24 July 2026, and the Commission is targeting Q1 2027 for the first set of guidelines. Between those two moments, the practical meaning of the Omnibus I amendments will be significantly shaped by what the guidelines say about risk prioritisation, the plausible information threshold, and how supervisory authorities should treat sectors with known high-risk supply chain structures.
Beyond the guidelines, member state transposition choices will matter considerably. The Omnibus I Directive introduces full harmonisation across several core due diligence provisions, including identification, prioritisation, addressing adverse impacts, complaints handling, monitoring, and reporting. But member states retain limited discretion to go further on specific adverse impacts or specific sectors. Countries with existing national legislation, notably France with its loi de vigilance and Germany with the LkSG, will face choices about how much to retain, restore, or extend beyond the Omnibus I floor. The ECCJ has already urged member states to use the transposition window to correct some of the damage done at the EU level.
The interaction between the CSDDD and other EU instruments will also continue to evolve. The EU Forced Labour Regulation, which I covered in depth earlier this month, was deliberately left untouched by Omnibus I and applies to every company placing products on the EU market with no size threshold. The EU Conflict Minerals Regulation covers tin, tantalum, tungsten, and gold from conflict-affected and high-risk areas. The EU Deforestation Regulation, though delayed, applies to certain commodities including some critical minerals. Companies building due diligence systems for CSDDD purposes should design them to serve these parallel obligations simultaneously rather than treating each instrument as a separate compliance project.
The CSDDD is wounded but not dead. For mineral supply chain actors, the more accurate description of the current situation is this: the law has been narrowed, enforcement has been softened, the timeline has been extended, and the guidance has not yet been written. That combination creates both risk and opportunity. Companies that engage seriously with the consultation, build robust Tier 1 due diligence now, and track the triggers for Tier 2 investigation will be better positioned in 2029 than those waiting to see how weak the guidelines turn out to be.