Statutory (L2315-78) vs free (L2315-81) CSE expert audit: 2026 comparison and decision guide

Updated 12 May 2026 — The French CSE (Social and Economic Committee) may appoint a chartered accountant under two distinct regimes of the French Labour Code. The choice between them determines cost, timelines, the depth of the analysis and the admissibility of any potential interim relief proceedings (référé) if the employer challenges the appointment. This guide compares mandatory statutory expertise (L2315-78) and optional free expertise commissioned by the CSE (L2315-81) point by point, and offers a decision tree to help you identify the correct regime for your situation.

<div class="featured-snippet"> The CSE may appoint a chartered accountant under two regimes: <strong>mandatory statutory expertise (Article L2315-78 of the French Labour Code)</strong> covers the 3 annual consultations, mass redundancy plans (PSE), the economic alert right and concentrations — funded 100% or 80% by the employer. <strong>Optional free expertise (Article L2315-81)</strong> covers BDESE audit, training of elected members and the bookkeeping of the CSE itself — funded by the CSE's operating budget (AEP, 0.20% to 0.22% of payroll). The choice depends on the subject, urgency and financial resources of the CSE. </div>

A CSE expert audit is an engagement entrusted by the elected members of the Social and Economic Committee to an independent chartered accountant registered with the Ordre des Experts-Comptables, whose purpose is to restore information symmetry in dealings with the employer. Facing management supported by corporate lawyers, CFOs and strategy consultants, CSE elected members rarely have the time or technical skills to analyse consolidated accounts, intra-group flows or restructuring projects. An expert audit becomes necessary as soon as a strategic, financial or social subject exceeds routine accounting reading: preparing a mandatory annual consultation, a PSE project, an OPA (takeover bid), an economic alert, a BDESE audit or the bookkeeping of the CSE itself. In 2026, approximately 60% of CSEs with more than 300 employees commission at least one expert audit per year.

Statutory expertise is governed by Article L2315-78 of the French Labour Code and covers five families of subjects: the 3 mandatory annual consultations (strategic orientations, economic and financial situation, social policy), restructuring projects and PSE (L1233-30), the economic alert right, OPA and concentrations, and the consultation on the introduction of new technologies. Financing is entirely borne by the employer (100%), except for the consultation on strategic orientations where the employer pays 80% and the CSE 20% (unless a more favourable agreement applies). The expert benefits from access to all necessary documents, including confidential ones (analytical, forecasts, intra-group flows), under strict professional secrecy.

The 3 mandatory annual consultations (orientations, economic situation, social policy)#

Since the 2017 Macron ordinances, the CSE of companies with 50 or more employees is consulted three times a year on strategic orientations, the economic and financial situation, and social policy. The chartered accountant issues a report for each consultation, within a statutory deadline of 2 to 4 months.

PSE, reorganisation plan, economic alert and concentrations#

As soon as a collective dismissal project affects 10 employees over 30 days in a company with 50+ employees, a PSE is mandatory. The CSE's chartered accountant analyses the economic justification, the dismissal order and the reclassification plan.

Financing: 100% or 80% employer depending on the consultation#

Free expertise (Article L2315-81 of the French Labour Code) gives the CSE full autonomy to appoint an expert on any subject it deems useful. It is financed by the CSE operating budget (AEP), which represents 0.20% of gross payroll for companies of 50 to 1,999 employees and 0.22% beyond 2,000 employees. Typical subjects covered: BDESE audit, economic training of titular elected members, negotiation of agreements (profit-sharing, participation, remote work), bookkeeping of the CSE itself, audit in case of suspected fraud by the treasurer. The expert may only access documents held by the CSE — they cannot require the employer to produce confidential analytical or forecast items, unlike statutory expertise.

Subjects covered: BDESE audit, training, negotiation, CSE accounts#

Free expertise is preferred for technical non-urgent subjects: BDESE review 6 months before the next consultation, economic training of newly elected titular members, audit of the CSE's bookkeeping before the annual closing.

Financing: operating budget (AEP)#

The CSE's AEP budget is paid each year by the employer. The CSE must earmark part of it for free expertise (in practice, 10-30% of the AEP budget depending on the CSE's size).

Limitation: access only to documents held by the CSE#

This limitation is structural: a BDESE audit under free expertise does not have the same depth as an audit under statutory expertise (for example on the economic and financial situation), because the employer is not required to produce additional items.

The mandate of a CSE chartered accountant follows a formal procedure in 5 steps: 1) inscription of the subject on the agenda of the CSE plenary meeting, 2) deliberation and vote by a majority of titular members present (substitutes only vote when standing in for an absent titular), 3) drafting of an engagement letter signed by the CSE secretary and the chartered accountant, 4) notification of the employer by recorded delivery with acknowledgement of receipt, 5) effective start of the engagement, with document access within 8 days under statutory expertise (failing which, interim relief proceedings can be triggered). The CSE is sovereign in its choice of firm: the employer may neither impose nor refuse the designated expert.

1. Is the subject one of the 3 mandatory annual consultations or a PSE / OPA / economic alert? → Statutory expertise (L2315-78), financed by the employer.
2. Does the subject relate to an internal CSE audit (BDESE, bookkeeping, treasurer fraud, training of elected members)? → Free expertise (L2315-81), financed by the AEP budget.
3. Does the subject concern an agreement negotiation (profit-sharing, remote work, participation)? → Free expertise (L2315-81), unless attached to a mandatory consultation.
4. Is the subject a major strategic project of the company outside a PSE (reorganisation, merger, disposal)? → Statutory expertise (L2315-78) under the strategic orientations consultation.
5. Is the CSE short of AEP budget for an urgent free expertise? → Check whether the subject can be attached to a mandatory consultation to switch to statutory, otherwise prioritise within the annual budget.
6. Is the employer challenging the legitimacy of the expertise? → Under statutory, interim relief proceedings within 8 days before the tribunal judiciaire. Under free, private contractual negotiation.

A central CSE representing 800 employees is informed of a reorganisation project leading to 70 job cuts over 6 months. With the 10 employees over 30 days threshold crossed, a PSE is mandatory and automatically triggers a statutory expertise (L2315-78) funded 100% by the employer. CSE elected members deliberate at a plenary meeting on D+5 from the project's announcement, vote the appointment of Hayot Expertise by a majority of titulars, and sign the engagement letter on D+7. The expert obtains the strategic documents (analytical site accounts, 18-month forecasts, intra-group flows with the foreign parent company) within 8 days. The expert report, delivered within 2 months, allows elected members to negotiate 28 additional internal mobilities, bringing dry dismissals down to 42 — i.e. 40% of jobs preserved.

If the employer challenges the appointment, the scope, the cost or the documents provided, the CSE has recourse through interim relief proceedings (référé) before the tribunal judiciaire. The deadline is strict: 10 days from the deliberation to challenge the cost or the scope of the mission, 8 days to challenge a refusal of document access. The judge generally rules within one month. In 2024-2025, the Chambre sociale of the Cour de cassation has reinforced case law in favour of CSEs: employer challenges are rejected in approximately 75% of cases when the CSE procedure has been followed correctly, in particular when the agenda was properly drafted, the vote regularly held by a majority of titular members, and the engagement letter signed before the employer's first formal contestation. An experienced CSE chartered accountant knows how to prepare the procedural elements upstream to secure the mandate against any late challenge — by drafting a model deliberation, by reviewing the agenda before the plenary session, and by anticipating the employer's likely arguments on scope and cost. In practice, a robust paper trail from the start of the engagement reduces litigation risk to a minimum and lets the elected members focus on the substantive negotiation rather than on procedural skirmishes that delay the deliverables.

• CSE accounting in 2026: Pennylane and ANC 2015-01 compliance — Practical guide for the treasurer to digitalise CSE bookkeeping.
• PSE in 2026: role, duration and fees of the CSE chartered accountant — Procedural calendar, fee ranges, real case with 44% of jobs preserved.
• Our dedicated offering: chartered accountant specialised in CSE — 50+ active mandates, including Auchan Retail France. Quote within 24 hours.

Article written and reviewed by Samuel Hayot, chartered accountant registered with the Ordre des Experts-Comptables of Paris Île-de-France and statutory auditor (commissaire aux comptes, CRCC). Cabinet Hayot Expertise has supported more than 50 CSEs in France since 2014, from individual establishment CSEs to central CSEs of SBF 120 groups.

Sources: Légifrance L2315-78, L2315-81, L2315-84, French Ministry of Labour — CSE. This analysis is up to date as of 12 May 2026. To apply it to your situation, book an appointment on 06 51 47 43 92.