Background
The victim, [D] [Y], worked for Société [4] (whose legal successor is Société [2]) from June 2000, and subsequently for Société [3] from February 2005 until 1 January 2016. In June 2016, the primary health insurance fund (CPAM) of Meurthe-et-Moselle recognised an asbestos-related occupational disease under Table No. 30 bis of the French schedule of occupational diseases. The victim then brought proceedings before the social security tribunal seeking a declaration that his former employer (Société [2]) had committed an inexcusable fault (faute inexcusable), which under Article L. 452-1 of the Social Security Code entitles victims to enhanced compensation beyond standard industrial-injury benefits.
The victim died during the proceedings. His spouse and two children (the heirs) continued the claim, and the Asbestos Victims Compensation Fund (FIVA), which had been subrogated to the heirs’ rights, intervened as a party. On 12 September 2023 the Nancy Court of Appeal (Social Chamber) rejected the claim, finding that the heirs had failed to prove that the victim had been exposed to asbestos dust specifically during the period when he was employed by Société [2]. The heirs filed a principal appeal to the Court of Cassation; FIVA lodged a cross-appeal. Both raised the same single ground: that the Court of Appeal had improperly reversed the burden of proof, because under a 2017 precedent of the Second Civil Chamber it is the employer — not the victim — who must prove the absence of a causal link between the occupational disease and work carried out in its service.
The central legal question was therefore whether the victim (or heirs) must prove exposure to the risk at the specific defendant employer’s workplace, or whether, once an occupational disease is recognised, the employer must disprove it.
The Court’s Holding
The Court of Cassation rejected both the principal and cross-appeals, thereby upholding the Nancy Court of Appeal. More significantly, the Court explicitly overruled its own 2017 precedent (2nd Civ., 15 June 2017, No. 16-14.901) which had placed the burden on the employer to prove the absence of imputability. The Court held that it is now for the victim — or, as here, the victim’s heirs — to prove that the victim was exposed to the risk that caused the occupational disease while in the service of the defendant employer. This ruling was announced as a deliberate change in case law, designated FS-B (formation de section, destined for publication in the Bulletin).
The Court grounded the shift in two interconnected reasons. First, it applied Article 1353 of the Civil Code, the foundational rule that whoever claims the performance of an obligation must prove it, and that it falls to the defendant only to prove payment or extinction of the obligation. Second, it relied on the principle of independence between the three bilateral relationships in occupational-disease litigation — (i) victim and fund, (ii) employer and fund, and (iii) employer and victim. Because of that independence, the CPAM’s administrative decision recognising the disease as occupational creates neither a presumption that the disease has a professional origin nor a presumption that the victim was exposed to the relevant risk at any particular employer. The 2017 rule, which treated the recognition decision as effectively shifting the evidential burden onto the employer, was therefore incompatible with these principles.
Applying the new standard to the facts, the Court found no error by the Court of Appeal. The witness statements produced by the heirs were insufficient to establish that the victim had inhaled asbestos dust while working for Société [2], and the victim himself had not listed any prior employer as a source of asbestos exposure in his occupational-disease declaration.
Key Takeaways
- Burden on the claimant: In an inexcusable-fault action under Article L. 452-1 of the Social Security Code, it is the victim (or heirs) who must prove exposure to the occupational risk while employed by the specific defendant employer — the employer is not required to disprove imputability.
- Explicit overruling of 2017 precedent: The decision formally abandons 2nd Civ., 15 June 2017 (No. 16-14.901), which had reversed that burden. Courts and practitioners must update their approach to pleading and evidence in asbestos inexcusable-fault litigation accordingly.
- CPAM recognition gives no presumption against a particular employer: The fund’s administrative decision classifying a disease as occupational has no evidential effect in the separate civil action between the victim and the employer; the jurisdictions must make their own findings on exposure and fault.
- Multi-employer exposure cases: Even where a victim was exposed to a risk across several employers, the claim against any one of them requires positive proof of exposure during that specific employment relationship; prior precedent permitting a claim against any one employer (Soc., 28 Feb. 2002; 2nd Civ., 8 Mar. 2005) is preserved but now combined with a claimant-side burden of proof.
Why It Matters
This ruling is a landmark development in French asbestos litigation. France has tens of thousands of pending and future asbestos-related occupational-disease claims, many involving victims who worked across multiple employers and industries over long careers. By placing the burden of proving workplace exposure on victims and their heirs — who must often reconstruct working conditions dating back decades, relying on ageing witnesses and fragmentary records — the decision materially raises the evidentiary hurdle for obtaining the enhanced compensation that an inexcusable-fault finding unlocks. FIVA, which funds payouts to asbestos victims and then subrogate to seek reimbursement from employers, is directly affected and will need to adjust the evidence it gathers before intervening in proceedings.
The designation FS-B signals that the Court intends the ruling to bind the lower courts immediately and consistently. Practitioners advising victims’ families or employers in the asbestos field should treat the 2017 burden-shifting rule as definitively superseded and ensure that dossiers are built from the outset around contemporaneous workplace records, occupational-hygiene assessments, and corroborating testimony capable of establishing exposure at the specific defendant employer’s site.