France Enacts In-House Counsel Privilege: What It Means for International Arbitration

On 18 February 2026, the French Constitutional Council validated a landmark law adopted on 14 January 2026 establishing confidentiality protection—often referred to as “legal privilege”—for legal consultations prepared by in-house counsel (juristes d’entreprise). This reform, nearly four decades in the making, fundamentally changes how French companies can protect internal legal advice and has significant implications for document disclosure in international arbitration proceedings.

This alert summarizes the key features of the new law and offers practical guidance for parties involved in cross-border disputes.

Key Features of the New Law

What Is Protected?

In France, in-house counsel do not have the same legal status as external lawyers (avocats). Whereas external lawyers benefit from full professional secrecy (external lawyers’ legal advice, communications, emails, notes, and exchanges with clients are inherently confidential), in-house counsel do not. It follows that legal advice provided by in-house lawyers is not protected by privilege.

This new law aims to establish a confidentiality regime to legal consultations drafted by in house counsel.

The law protects “legal consultations” (consultations juridiques), defined as personalized intellectual work providing advice or opinions based on the application of a rule of law. This confidentiality extends to all draft versions of such consultations.

Conditions for Protection

For a document to benefit from confidentiality, four cumulative conditions must be met:

Scope of Protection

Protected consultations cannot be compelled for production in civil, commercial, or administrative proceedings. This includes requests from French or foreign administrative authorities. They may likewise not be invoked against the company employing the in‑house counsel, nor against any company within the group to which that employer belongs.

However, the law carves out important exceptions:

• Criminal matters: No protection applies.
• Tax proceedings: No protection applies.
• EU authorities: The confidentiality cannot be asserted against European Union institutions exercising their control powers.

Challenging Confidentiality

The law establishes a procedure for challenging claimed confidentiality. A judge may lift confidentiality, either during civil or commercial proceedings, or during an administrative investigation, when:

• The document does not meet the legal requirements, or
• The document was intended to facilitate or incite fraud or violation of third-party rights.

Documents under challenge are placed under seal with a commissaire de justice (bailiff) pending judicial determination.

Fraudulent labeling of a document as confidential is punishable by up to one year imprisonment and €15,000 in fines.

Implications for International Arbitration

Document Production Requests

The new law has direct implications for document production in international arbitration, particularly when French companies are involved. Under the IBA Rules on the Taking of Evidence or similar institutional rules, parties routinely request production of internal legal analyses.

French parties may now assert confidentiality over qualifying in-house counsel advice in civil and commercial disputes—which encompasses most commercial arbitrations. This could significantly narrow the scope of discoverable documents in proceedings against French companies.

A Comparative Perspective

The reform aligns France with most OECD jurisdictions, where in-house counsel advice already enjoys some form of protection. Previously, France was an outlier, making French companies a target of choice.
Supporters argue the reform:

• provides a safeguard against the expanding extraterritorial application of foreign laws (notably U.S. discovery procedures);
• empowers French companies to compete on equal footing with their foreign counterparts;
• represents an indispensable tool for compliance and risk prevention, as it now enables in-house counsel to identify their organization’s vulnerabilities and address areas of risk, without fear of self-incrimination.

However, one important distinction remains. French in-house counsel privilege is in rem, meaning that it is attached to the document itself, whereas common law in-house counsel privilege is in personam, meaning that it is attached to the status of the in-house counsel. As a result, common law in-house counsel privilege tends to have a broader scope than its French equivalent.

Practical Considerations for Arbitration Practitioners

For Claimants against French parties: Be aware that internal compliance analyses, risk assessments, and legal opinions prepared by qualifying in-house counsel may now be shielded from production. Consider requesting documents that fall outside the privilege scope—for example, factual summaries, communications with external advisors, or documents created before the law’s implementation.

For French Respondents: Review your document management practices. Ensure qualifying legal consultations are properly labeled and archived separately. Make sure in-house counsel complete the required ethical rules training.

Timing and Next Steps

The law will enter into force on a date to be fixed by an implementing decree, no later than twelve months after promulgation. A government evaluation report is due within three years of the law’s enactment.