BDESE 2026: what the economic, social and environmental database must contain and how the CSE chartered accountant audits it

Updated 21 May 2026 — The BDESE (Economic, Social and Environmental Database, Base de Données Économiques, Sociales et Environnementales) is the central documentary tool of social dialogue in France. Renamed by the Climate and Resilience Law of 22 August 2021 and completed by the decree no. 2022-678 of 26 April 2022, it structures all the economic, social and environmental information the employer must make permanently available to CSE elected members. Yet, in the field, more than 60% of BDESEs audited by our teams are incomplete or non-compliant — a major legal lever for the CSE, which can obtain a suspension of the consultation deadline (Cass. soc. 28 March 2018, no. 17-13.081).

<div class="featured-snippet"> The <strong>BDESE</strong> is the documentary database the employer must permanently make available to the CSE in any French company of 50+ employees. It covers <strong>9 mandatory themes</strong> over 6 years (N-2 to N+3): investments, equity and debt, compensation, social and cultural activities, financiers' compensation, financial flows into the company, subcontracting, commercial transfers between establishments, and environmental impact (since the <a href="https://www.legifrance.gouv.fr/jorf/id/JORFTEXT000043956924">2021 Climate Law</a>). The CSE can appoint a chartered accountant under <strong>free expertise L2315-81</strong> to audit its compliance. An incomplete BDESE allows the CSE to suspend the consultation deadline. </div>

The BDESE content is set by articles R2312-8 to R2312-12 of the French Labour Code and structured into 9 mandatory themes, which must cover 6 years (N-2, N-1, current N, N+1, N+2, N+3 — prospectively for the three upcoming years):

The 10th environmental theme, added by the Climate and Resilience Law of 22 August 2021 and detailed by the 26 April 2022 decree, is now mandatory in all BDESEs since 1 July 2022. It includes greenhouse gas emissions measurement (scope 1, 2 and, depending on the case, scope 3), energy consumption, waste management and the company's climate transition plan.

The mandatory BDESE content varies depending on the company's headcount:

Companies from 50 to fewer than 300 employees (R2312-8 et seq.)#

Reduced content: the 9 themes are present but at a lower level of detail, with no obligation to present some analyses such as the full gender equality index. The BDESE may be paper or digital.

Companies of 300 employees and more (R2312-9 to R2312-12)#

Reinforced content: detailed presentation by socio-professional category (CSP), by establishment and by gender. Mandatory digital format since the 2021 Climate Law. More demanding prospective granularity for N+1 to N+3. Scope 3 environmental indicators (value chain) are expected in practice for large groups.

Adaptation agreement#

A majority company agreement may adapt the BDESE content — within the mandatory themes — to better reflect the activity's reality (L2312-21). In practice, this is a powerful lever for CSEs of complex groups: we regularly support the negotiation of these agreements to preserve the right to expert audit on each strategic theme.

A BDESE audit is a structural mission for any CSE in a 50+ employee company, for 5 reasons:

1. Preparation for the 3 annual consultations#

The BDESE is the principal documentary support for the 3 mandatory annual consultations: strategic orientations (L2312-24), economic and financial situation (L2312-25), social policy (L2312-26). A BDESE audited upstream allows elected members to identify weak points, ask the right questions in session, and commission a targeted statutory expertise.

2. Lever to suspend the consultation deadline#

Case law is clear: the French Cour de cassation (Chambre sociale, 28 March 2018, no. 17-13.081) confirmed that an incomplete BDESE allows the CSE to obtain the suspension of the statutory consultation deadline. Concretely, if the employer launches a consultation without having made a compliant BDESE available, the CSE can refer to the judge under interim relief proceedings and gain negotiation time — sometimes several critical weeks on a PSE or M&A operation.

3. Detection of opaque intra-group flows#

For French or international groups, the BDESE is often the only source revealing intra-group financial flows: management fees, brand royalties, transfer prices, dividends paid to the holding. A BDESE audit regularly reveals margin transfers not economically justified — a decisive argument during the strategic orientations consultation.

4. Verification of environmental indicators (since 2022)#

Since the 2021 Climate Law, French companies must integrate ESG indicators into their BDESE. Many SMEs and mid-caps fill them in partially or incorrectly (scope 1 forgotten, scope 3 missing, empty transition plan). A BDESE audit allows CSE elected members to request an update and use these indicators during strategic orientations consultations.

5. Pedagogical training of elected members#

The BDESE is a technical document that few non-accountant elected members can read autonomously. The audit comes with plenary meeting training to allow elected members to exploit it daily.

Our BDESE audit, funded by the CSE's AEP budget (free expertise L2315-81), unfolds in 5 steps over 6 to 10 weeks:

Step 1 — Retrieval and inventory (week 1)#

• Formal request to the employer for access to the complete BDESE (digital or paper).
• Inventory of themes present vs missing (reference: decree 2022-678).
• Inventory of covered years (N-2 to N+3 mandatory).
• Format identification (compliant digital for 300+ employees?).

Step 2 — Regulatory compliance check (weeks 2-3)#

• Exhaustive checklist of the 9 mandatory themes + ESG theme.
• Granularity check by CSP, gender, establishment (for 300+).
• Environmental indicators check (scope 1 / 2 / 3, transition plan).
• Identification of sanctionable omissions (missing mandatory theme, empty ESG indicators).

Step 3 — Internal consistency check (weeks 3-5)#

• Reconciliation with annual accounts: the BDESE payroll mass must match account 64 (personnel charges) of the published balance sheet. Revenue figures must match the tax bundle (account 70).
• Reconciliation with DSN declarations: headcount and compensation must be consistent with year-aggregated DSNs.
• Prospective consistency: are the N+1 to N+3 projections plausible in light of investment plans?

Step 4 — Strategic analysis of red flags (weeks 5-7)#

• Intra-group flows: management fees, royalties, transfer prices — comparison with sector benchmarks, identification of possible margin transfers.
• Headcount and FTE evolution: hidden trends (increasing use of temp workers, subcontracting).
• Equity and debt evolution: weak signals of economic difficulty or distribution strategy.
• Gender gaps: detection of glass ceilings or structural differences.

Step 5 — Report and pedagogical debriefing (weeks 7-10)#

• Detailed written report delivered to titular elected members (typically 50-80 pages).
• Plenary CSE meeting debriefing: pedagogical presentation, training on key indicators, action recommendations.
• Formal letter to the employer if the BDESE is incomplete, with an update request before the next consultation.
• Preservation of legal traceability: our work constitutes opposable evidence in case of interim relief proceedings to suspend the consultation deadline.

Funding: from the CSE's operating budget (AEP). For a CSE that has not provisioned a BDESE audit budget, it is possible to activate the ASC → AEP transfer within the limit of 10% of the annual surplus (article L2312-84).

Context: an international group of 1,200 employees (HQ in France, subsidiaries in Germany and Poland) announces a reorganisation project in March 2025, triggering the strategic orientations consultation. The central CSE appoints us under free expertise L2315-81 to audit the BDESE in parallel.

Audit findings:

• ESG theme missing: no scope 1 or 2 indicators for N-2 and N-1. Transition plan empty.
• Opaque intra-group flows: management fees to the German parent company not detailed (EUR 12M annually), no economic justification provided.
• N+1 to N+3 headcount inconsistent with the announced reorganisation project.

Action taken:

1. Written report delivered to elected members with non-conformity list.
2. Recorded delivery letter to employer requesting BDESE update within 15 days.
3. Tribunal judiciaire interim relief proceedings on the basis of Cass. soc. 17-13.081 case law to suspend the consultation deadline.

Outcome: the interim relief judge orders the suspension of the consultation deadline for 21 days, the time for the employer to produce a compliant BDESE. The CSE gains this precious time to analyse the real situation of the group and negotiate based on factually exhaustive elements — instead of a truncated dossier.

The employer who fails to set up a compliant BDESE is exposed to three types of sanctions:

1. Obstruction offence (L2317-1 of the Labour Code): fine up to EUR 7,500 per characterised infraction (refusal of BDESE access, failure to update, omission of a mandatory theme).
2. Suspension of the consultation deadline: on CSE referral under interim relief proceedings, the judge may suspend all or part of the statutory consultation deadline (typically 2 to 4 months), thereby blocking a strategic project.
3. Damages action: on the basis of contractual liability, the CSE may seek reparation if the BDESE deficit deprived it of an enlightened opinion.

• Confusing BDESE and social report (bilan social): the social report is a subset of the BDESE but does not replace it.
• Accepting a paper BDESE in a 300+ employee company: digital format is mandatory since 2022.
• Ignoring ESG indicators: even SMEs with 50-299 employees must report environmental impact since the Climate Law.
• Auditing without training elected members: a prior 1-2 hour BDESE reading training is essential to exploit the report.
• Missing the interim relief deadline: 8 days in case of document access refusal, from the employer's response.

• Outsourcing CSE bookkeeping at 100% — Hayot Expertise's full A-Z model to free up delegation time.
• Statutory (L2315-78) vs free (L2315-81) CSE expert audit — The BDESE audit falls under free expertise, funded by the AEP — read this comparison to articulate with statutory expertises.
• PSE in 2026: role, calendar and fees of the CSE chartered accountant — In a PSE, the BDESE audit becomes a decisive negotiation lever.
• Our dedicated offering: specialist CSE chartered accountant — 50+ active mandates, including Auchan Retail France. Fixed-fee BDESE audit, 24-hour quote.

Article written and reviewed by Samuel Hayot, chartered accountant registered with the Ordre des Experts-Comptables of Paris Île-de-France and statutory auditor (CRCC). Hayot Expertise has supported more than 50 CSEs in France since 2014. Our teams have conducted more than 80 BDESE audits since 2018 in companies from 80 to 12,000 employees, including international industrial groups and French mid-caps.

Sources: Decree 2022-678, R2312-8 et seq., R2312-9 to R2312-12, Cass. soc. 17-13.081, 2021 Climate Law, French Ministry of Labour — BDESE. This analysis is up to date as of 21 May 2026. For a BDESE audit of your CSE, book an appointment on 06 51 47 43 92.