Trial Periods: Legal Durations and Termination

Introduction: Why Trial Periods Remain a Point of Legal Friction

The trial period is one of the most poorly mastered clauses in French labour law. Yet its rules are precise: maximum durations fixed by the Labour Code, mandatory notice periods, strict renewal conditions. An employer who terminates a trial period without respecting these parameters risks reclassification as dismissal without genuine and serious cause, with accompanying compensation. 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 employee category, renewal conditions, termination modalities and best documentary practices — particularly the contribution of electronic signature to secure your employment contracts.

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Legal Durations of Trial Periods under Labour Law

Initial Durations by Employee Category

Article L1221-19 of the Labour Code sets the maximum durations of trial periods for indefinite-term contracts (CDI):

• Labourers and employees: 2 months

• Supervisors and technicians: 3 months

• Managers: 4 months

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

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

Trial Periods and Particular Contracts

Apprenticeship contracts, professional development contracts and fixed-term temporary contracts are subject to specific rules. Apprenticeship provides for a trial period of 45 days (art. L6222-18 C. trav.) during which both parties may terminate freely and without compensation. For employees on professional development contracts, the duration is aligned with that of the CDI or CDD depending on the contract nature.

It should be noted that the trial period must be expressly stipulated in the engagement letter 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 step through qualified electronic signature compliant with eIDAS guarantees proof of the parties' agreement at the date of signing.

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Renewal of Trial Period: Conditions and Limits

Cumulative Conditions for Renewal

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

• The collective agreement must expressly authorise it: a company agreement alone is insufficient.

• The possibility of renewal must be stipulated in the employment contract or engagement letter at the time of hiring.

• The employee must give express written consent to renewal before the expiration of the initial period.

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

• 4 months for labourers and employees

• 6 months for supervisors and technicians

• 8 months for managers

Any clause providing for a second renewal or exceeding these ceilings is void by operation of law.

Suspension of 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 it. In the absence of stipulation, recent case law (Cass. soc., 28 Apr. 2011, no. 09-72.165) holds that suspension does not automatically entail extension.

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Termination of Trial Period: Notice Periods and Formalities

Notice Periods to be Observed

Since the law of 25 June 2008 (art. L1221-25 and L1221-26 C. trav.), compliance with notice periods is mandatory when terminating a trial period, whether initiated by the employer or the employee.

On the employer's initiative, the notice period varies according to length of service in the company:

| Length of employment | 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 |

On the employee's initiative, the notice period is 48 hours, reduced to 24 hours if the period of employment in the company is less than 8 days.

Non-compliance with these periods by the employer does not result in reclassification as dismissal, but opens the right to compensation equal to 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 delivered in person against receipt, registered letter with acknowledgement of receipt or, increasingly, time-stamped email). Verbal termination, if contested, is difficult to prove.

The most robust solution from a proof perspective is the sending of a document signed electronically, whose qualified time-stamping constitutes irrefragable 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 had knowledge of the pregnancy or if the employee notifies her pregnancy within 15 days following termination (art. L1225-4 C. trav.).

• Work accident or occupational illness: termination during a work stoppage consequent to 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 C. trav.) is void, even during the trial period.

Electronic signature for HR teams allows you to trace each step of the contractual process, including termination notifications, in an auditable environment.

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Interaction with Branch Agreements and Recent Case Law

Primacy of Favourable Collective Agreements

The principle of favour, reaffirmed by the Macron decrees of 2017, provides that the collective agreement or branch agreement may derogate from the law in a manner more favourable to the employee. Thus, an agreement fixing the trial period for managers at 3 months (instead of 4) binds the employer. Conversely, an agreement attempting to extend the period to 6 months would be unlawful.

Branch agreements concluded before the law of 25 June 2008 that provided for durations exceeding legal ceilings remain valid under certain conditions (art. L1221-22 C. trav.), creating a dual regime that must be verified sector by sector.

Landmark 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 competencies in the role — termination motivated by economic considerations may be reclassified as 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 Mar. 2023: sending an email without read receipt is insufficient to prove the date of termination in the absence of other substantive evidence — arguing for the use of certified signature and sending tools.

For companies seeking to dematerialise 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 hierarchised texts that complement and, sometimes, overlap each other.

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

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

Civil Code — Probative Force of Writings — 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 it is established and kept in conditions guaranteeing its integrity. Article 1367 clarifies that electronic signature consists of the use of a reliable means of identification. These provisions provide the legal foundation for 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 levels of signature: 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 time-stamping, in accordance with ETSI EN 319 132 (XAdES) and ETSI EN 319 122 (CAdES) standards.

GDPR no. 2016/679 — Personal data collected when constituting the recruitment file (CV, identity documents, payroll information) are subject to GDPR. The employer must guarantee their security, minimisation and lawful retention duration, 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 stipulated, renewal without express consent) or termination not respecting notice periods exposes the company to employment tribunal condemnations potentially exceeding several months of gross salary, particularly if the judge reclassifies termination as 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 approximately fifty employees in the digital services sector recruits around twenty new collaborators annually, of which 30% are managers. Until 2024, contracts were printed, signed manually and returned by mail, resulting in average delays of 4 to 6 days between the verbal offer and effective signature. Several candidates withdrew during this period, lacking certainty on 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 renewal possibility are pre-filled according to the applicable collective agreement, reducing parametrisation errors by 80%. In case of termination during the trial, a time-stamped notification is automatically generated, constituting admissible evidence in employment disputes.

Scenario 2 — An HR Consulting Firm Managing Personnel Delegations

An HR firm managing approximately 120 delegation missions annually must issue as many contracts, the majority of which are CDDs with trial periods calculated pro rata. The challenge is twofold: ensure the trial duration is compliant (1 day per week, within legal limits) and keep certain record of termination notification for aborted missions. Before dematerialisation, 15% of files presented incorrect trial durations, a source of employment law risks. After integrating an electronic signature tool interfaced with their HRIS, durations are automatically calculated and termination notifications are archived with qualified time-stamping. The firm estimates having reduced by 90% the time devoted to documentary management of trial endings and avoided two employment disputes over the 2024-2025 period.

Scenario 3 — An Industrial Group with Multiple Geographic Sites

An industrial group of approximately 2,500 employees spread across eight sites in France encounters difficulties 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 provisions — accessible via an AI-powered contract generator — the group standardised 100% of its templates. Trial period terminations are now notified via the platform, with automatic calculation of notice period and legal archiving for 5 years. The group reduced by 40% HR disputes related to end of trial period over the first 18 months of use.

Conclusion

The trial period is far more than a stylistic clause: it is a precise legal mechanism, governed by imperative legal durations, strict renewal conditions and notice periods whose non-compliance can prove costly. Labourers, technicians, managers — each category is subject to its own ceilings. Case law, for its part, continues to strengthen the evidentiary obligations borne by the employer, particularly regarding termination notification.

Securing each stage of the employment contract — from the initial trial clause to the eventual termination notification — now passes through dematerialisation 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 contractual process into compliance today.