Trial Periods: Legal Durations and Termination

Introduction: Why the Trial Period Remains a Point of Legal Friction

The trial period is one of the most poorly understood clauses in French labour law. Yet its rules are precise: maximum durations set by the Labour Code, mandatory notice periods, strict conditions for renewal. An employer who terminates a trial period without respecting these parameters risks reclassification as an unfair dismissal without genuine and serious cause, with the compensation attached to it. On the other hand, an employee who resigns without respecting their notice period may incur contractual liability. This article details the legal durations applicable to each category of employee, the conditions for renewal, the procedures for termination and best practice documentation — in particular the benefit of electronic signature to secure your employment contracts.

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Legal Durations of the Trial Period under the Labour Code

Initial Durations by Employee Category

Article L1221-19 of the Labour Code sets the maximum durations of the trial period for permanent contracts (CDI):

• Workers and clerical staff: 2 months

• Supervisory staff and technicians: 3 months

• Senior management: 4 months

These durations are measured in calendar time (not working days), unless the applicable collective agreement provides more favourable terms for the employee. It is important to note that the applicable collective agreement may provide shorter durations — which then bind the employer — but never longer durations than those in the Labour Code, except for collective agreements predating 25 June 2008 maintained on a derogatory basis.

For fixed-term contracts (CDD), the durations are proportional to the contract duration: 1 day per week of contract, up to a maximum of 2 weeks for CDDs of 6 months or less, and 1 month for CDDs exceeding 6 months (art. L1242-10 Labour Code).

Trial Period and Special Contracts

Apprenticeship contracts, training contracts and interim CDI contracts are subject to specific rules. Apprenticeships provide for a trial period of 45 days (art. L6222-18 Labour Code) during which both parties may terminate freely and without compensation. For employees on training contracts, the duration is aligned with that of the CDI or CDD depending on the contract type.

It should also be remembered that the trial period must be expressly stipulated in the letter of offer or employment contract: in the absence of written mention, it is deemed non-existent, even if the collective agreement provides for it (Cass. soc., 7 Nov 2001, no. 99-43.940). Securing this stage by qualified electronic signature compliant with eIDAS guarantees proof of the parties' agreement at the date of signature.

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Renewal of the Trial Period: Conditions and Limits

Cumulative Conditions for Renewal

Article L1221-21 of the Labour Code authorises renewal of the trial period, but only under three cumulative conditions:

• The collective agreement must expressly authorise it: an undertaking agreement alone is not sufficient.

• The possibility of renewal must be provided for in the employment contract or letter of offer at the time of hiring.

• The employee must give their express written agreement to renewal before the expiry of the initial period.

Renewal can only occur once. The total duration (initial period + renewal) cannot exceed:

• 4 months for workers and clerical staff

• 6 months for supervisory staff and technicians

• 8 months for senior management

Any clause providing for a second renewal or exceeding these ceilings is null and void.

Suspension of the Trial Period

The trial period may be suspended by events such as illness, work accident, paid leave or maternity leave. The Court of Cassation considers that the trial period is extended accordingly — but only if the contract or collective agreement expressly provides for this. In the absence of such provision, recent case law (Cass. soc., 28 April 2011, no. 09-72.165) holds that suspension does not automatically entail extension.

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Termination of the Trial Period: Notice Periods and Formalities

Notice Periods to be Observed

Since the law of 25 June 2008 (art. L1221-25 and L1221-26 Labour Code), the observance of notice periods is mandatory when terminating the trial period, whether initiated by the employer or the employee.

At the Initiative of the Employer, the notice period varies according to length of service in the company:

| Length of Service | Notice Period | |---|---| | Less than 8 days | 24 hours | | Between 8 days and 1 month | 48 hours | | Between 1 and 3 months | 2 weeks | | More than 3 months | 1 month |

At the Initiative of the Employee, the notice period is 48 hours, reduced to 24 hours if the employee's presence in the company is less than 8 days.

Failure to observe these periods by the employer does not result in reclassification as an unfair dismissal, but gives rise to compensatory damages equivalent to the salaries that would have been earned during the unobserved period (art. L1221-25, al. 3).

Form of Termination and Documentary Risks

The law imposes no particular form for terminating a trial period. However, prudence recommends written notification (letter handed over against receipt, registered letter with acknowledgement of receipt or, increasingly, timestamped electronic message). Verbal termination, if contested, is difficult to prove.

The most robust solution from a probative perspective is the sending of a document signed electronically, whose qualified timestamping constitutes irrefutable proof of the date of sending. You will find practical resources in our electronic signature glossary to understand the levels of proof associated with each type of signature.

Prohibitions and Special Protections

Certain terminations are prohibited even during the trial period:

• Pregnant employee: termination is void if the employer knew of the pregnancy or if the employee notifies the employer of the pregnancy within 15 days following termination (art. L1225-4 Labour Code).

• Work accident or occupational illness: termination during a work stoppage resulting from an accident/illness is possible, but only for gross misconduct or impossibility of maintaining the contract for a reason unrelated to the accident.

• Discrimination: any termination motivated by a discriminatory criterion (art. L1132-1 Labour Code) is void, even during the trial period.

Electronic signature for HR teams makes it possible to track each stage of the contractual process, including termination notices, in an auditable environment.

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Interaction with Collective Agreements and Recent Case Law

Primacy of More Favourable Collective Agreements

The favourability principle, reaffirmed by the 2017 Macron ordinances, provides that the collective agreement or collective bargaining agreement may derogate from the law in a manner more favourable to the employee. Thus, a collective agreement setting the trial period for senior management at 3 months (instead of 4) binds the employer. Conversely, an agreement attempting to extend the duration to 6 months would be unlawful.

Collective agreements concluded before 25 June 2008 which provided for durations exceeding the legal ceilings remain valid under certain conditions (art. L1221-22 Labour Code), creating a dual regime that must be checked sector by sector.

Notable Case Law 2020-2026

• Cass. soc., 16 Sept 2020, no. 19-10.948: the trial period must enable the employer to assess the employee's competence in their role — termination motivated by economic considerations may be reclassified as an unfair dismissal.

• Cass. soc., 6 Oct 2021, no. 20-10.567: the employee may contest the legitimacy of termination if it occurs on the first day — the trial must be real and effective.

• CA Paris, 23 March 2023: sending an email without read receipt is not sufficient to prove the date of termination in the absence of other probative elements — arguing for the use of certified signature and sending tools.

For companies seeking to digitalise the entire lifecycle of the employment contract, our comparison of electronic signature solutions will help you identify the solution suited to your volume and risk level.

Legal Framework Applicable to Trial Periods

The trial period is governed by a set of hierarchical texts that complement each other and, sometimes, overlap.

Labour Code — Articles L1221-19 to L1221-26 form the legislative foundation. They define maximum durations, conditions for renewal, notice periods and special protections. Article L1221-19 sets initial durations (2, 3 or 4 months depending on category). Article L1221-20 sets the teleological criterion of the trial period: to enable the employer to assess the employee's competence, and the employee to assess working conditions. Article L1221-25 imposes notice periods in case of termination at the employer's initiative, whilst Article L1221-26 governs those applicable to termination at the employee's initiative.

Law of 25 June 2008 Modernising the Labour Market — This law unified the trial period regime, previously highly disparate across sectors. It established the current legal ceilings and made notice periods mandatory, filling a gap that was detrimental to employees.

Civil Code — Probative Value of Written Records — Article 1366 of the Civil Code recognises the legal value of electronic writing, equivalent to that of paper writing, provided that its author can be duly identified and that it is established and maintained in conditions guaranteeing its integrity. Article 1367 clarifies that electronic signature consists of the use of a reliable identification procedure. These provisions underpin the legality of an employment contract signed electronically, including its trial period clause.

eIDAS Regulation no. 910/2014 and eIDAS 2.0 — The European regulation on electronic identification and trust services establishes three signature levels: simple, advanced and qualified. For an employment contract containing a trial period, advanced (or qualified) electronic signature is recommended to ensure non-repudiation and certified timestamping, in accordance with ETSI EN 319 132 (XAdES) and ETSI EN 319 122 (CAdES) standards.

GDPR no. 2016/679 — Personal data collected during the recruitment process (CV, identity documents, payroll information) are subject to the GDPR. The employer must ensure their security, minimisation and lawful retention period, including when processed in an electronic signature tool. Sub-processors (SaaS editors) must be covered by a DPA (Data Processing Agreement) compliant with Article 28 of the GDPR.

Legal Risks in Case of Non-Compliance — A poorly drafted trial period (duration not specified, renewal without express agreement) or termination not respecting notice periods exposes the company to employment tribunal rulings that may exceed several months of gross salary, particularly if the judge reclassifies the termination as an unfair dismissal without genuine and serious cause.

Usage Scenarios: Trial Period and Electronic Signature

Scenario 1 — A Digital Services SME in Strong Growth

An SME of around fifty employees in the digital services sector recruits about twenty new collaborators per year, of which 30% are senior management. Until 2024, contracts were printed, manually signed and returned by post, resulting in average delays of 4 to 6 days between the verbal offer and effective signature. Several candidates withdrew during this period, lacking certainty about the start date. By deploying an advanced electronic signature solution, the signature delay fell to less than 4 hours. The trial period clause, notice periods and the possibility of renewal are pre-populated according to the applicable collective agreement, reducing contract setup errors by 80%. In the event of termination during the trial, a timestamped notification is automatically generated, constituting admissible evidence in the event of employment tribunal disputes.

Scenario 2 — An HR Consultancy Managing Personnel Placements

An HR consultancy managing approximately 120 placement assignments annually must issue as many contracts, the majority of which are fixed-term contracts with a trial period calculated on a pro-rata basis. The challenge is twofold: ensure that the trial duration is compliant (1 day per week, within the legal limit) and maintain certain proof of termination notification for aborted assignments. Before digitalisation, 15% of files had an incorrect trial duration, a source of employment tribunal risks. After integrating an electronic signature tool interfaced with their HRIS, durations are automatically calculated and termination notices are archived with qualified timestamping. The consultancy estimates that it has reduced by 90% the time spent managing documentary aspects of trial endings and avoided two employment tribunal procedures over the 2024-2025 period.

Scenario 3 — An Industrial Group with Multiple Geographical Sites

An industrial group of around 2,500 employees spread across eight sites in France encounters difficulties in harmonising HR practices regarding trial periods: some managers sign contracts with durations non-compliant with the metallurgy collective agreement, others forget to stipulate renewal in the initial contract. By deploying a contract generator parameterised according to job categories and applicable collective agreement provisions — accessible via an AI contract generator — the group has standardised 100% of its templates. Trial period terminations are now notified via the platform, with automatic calculation of the notice period and legal archiving for 5 years. The group has reduced by 40% HR disputes related to the end of trial period over the first 18 months of use.

Conclusion

The trial period is far more than a mere stylistic clause: it is a precise legal mechanism, governed by imperative legal durations, strict conditions for renewal and notice periods whose non-observance can be costly. Workers, technicians, senior management — each category follows its own ceilings. Case law, meanwhile, continues to strengthen the evidentiary obligations placed on the employer, particularly regarding termination notification.

Securing every stage of the employment contract — from the initial trial clause to any potential termination notice — now passes through digitalisation and electronic signature. Certyneo offers you an eIDAS-compliant platform, audited and interfaceable with your HRIS to manage your contracts with peace of mind.

Try Certyneo for free and bring your HR contracting process into compliance today.