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 misunderstood 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 requalification as dismissal without real and serious cause, with associated compensation. Conversely, an employee who resigns without respecting their notice period can engage contractual liability. This article details the legal durations applicable to each employee category, renewal conditions, termination procedures and best documentary practices — notably the contribution of electronic signature in securing your employment contracts.

---

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 trial period durations for indefinite-term contracts (CDI):

• Workers and employees: 2 months

• Supervisory staff 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 collective bargaining agreements predating 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, 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 Particular Contracts

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

We should also recall that the trial period must be expressly stipulated in the letter of engagement 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 by qualified electronic signature compliant with eIDAS guarantees proof of the parties' agreement at the date of signature.

---

Renewal of the Trial Period: Conditions and Limits

Cumulative Conditions for Renewal

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

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

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

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

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

• 4 months for workers and employees

• 6 months for supervisory staff and technicians

• 8 months for managers

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

---

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), compliance with notice periods is mandatory when terminating the trial period, whether at the initiative of the employer or employee.

At the initiative of the employer, the notice period varies according to seniority in the company:

| Duration 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 period in the company is less than 8 days.

Non-compliance with these periods by the employer does not result in requalification as dismissal, but grants entitlement to compensation equivalent to the salaries that would have been earned during the unobserved period (art. L1221-25, para. 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 by hand against receipt, registered letter with acknowledgment of receipt, or increasingly, timestamped electronic message). Verbal termination, if contested, is difficult to prove.

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

Prohibitions and Particular Protections

Certain terminations are prohibited even during the trial period:

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

• Work accident or occupational disease: termination during absence from work due to a work accident/occupational disease is possible only for serious misconduct or impossibility to maintain the contract for a reason unrelated to the accident.

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

Electronic signature for HR teams enables tracking of each step in the contractual process, including termination notifications, in an auditable environment.

---

Articulation with Collective Agreements and Recent Case Law

Primacy of Favourable Collective Agreements

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

Sectoral agreements concluded before the law of 25 June 2008 that provided for durations exceeding legal ceilings remain valid under certain conditions (art. L1221-22 Labour Code), 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 competence in their role — termination motivated by economic considerations may be requalified 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 March 2023: sending an email without read receipt is insufficient to prove the termination date in the absence of other probative elements — advocating for the use of certified signature and sending tools.

For companies seeking to dematerialize the entire employment contract lifecycle, 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 hierarchical set of 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 competence, and the employee to evaluate working conditions. Article L1221-25 imposes notice periods in the event of termination at the employer's initiative, while article L1221-26 governs those applicable to termination at the employee's initiative.

Law of 25 June 2008 on Modernization of 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 detrimental to employees.

Civil Code — Evidentiary Force of Writings — Article 1366 of the Civil Code recognizes the legal value of electronic writings, equivalent to that of paper writings, provided that its author can be duly identified and it is established and preserved under conditions guaranteeing its integrity. Article 1367 specifies that electronic signature consists in the use of a reliable identification process. These provisions found the legality of the electronically signed employment contract, 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 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 hiring process (CV, identity documents, payroll information) is subject to the GDPR. The employer must guarantee its security, minimization 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 agreement) or termination not respecting notice periods exposes the company to tribunal awards that may exceed several months of gross salary, particularly if the court requalifies the termination as dismissal without real and serious cause.

Usage Scenarios: Trial Period and Electronic Signature

Scenario 1 — A Digital Services SME in Strong Growth

An SME of about fifty employees in the digital services sector recruits twenty new collaborators per year, of which 30% are managers. Until 2024, contracts were printed, manually signed 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 about the start date. By deploying an advanced electronic signature solution, the signature period has fallen to less than 4 hours. The trial period clause, notice periods and possibility of renewal are pre-filled according to the applicable collective agreement, reducing parameterization errors by 80%. In the event of termination during the trial, a timestamped notification is automatically generated, constituting admissible proof in the event of employment tribunal litigation.

Scenario 2 — An HR Consulting Firm Managing Personnel Delegations

An HR firm managing around 120 delegation assignments annually must issue as many contracts, most of which are fixed-term contracts with trial periods calculated pro rata. The challenge is twofold: ensure that the trial period duration is compliant (1 day per week, within legal limits) and maintain a certain record of termination notification for aborted assignments. Before dematerialization, 15% of files had an incorrect trial period duration, a source of employment tribunal risks. After integration of an electronic signature tool interfaced with their HRIS, durations are calculated automatically and termination notifications are archived with qualified timestamp. The firm estimates it has reduced by 90% the time spent on managing trial period end documentation and avoided two employment tribunal proceedings over the 2024-2025 period.

Scenario 3 — An Industrial Group with Multiple Geographic Sites

An industrial group of around 2,500 employees spread across eight sites in France encounters difficulties harmonizing HR practices regarding trial periods: some managers sign contracts with durations not compliant with the metallurgy collective agreement, others forget to stipulate renewal in the initial contract. By deploying a contract generator parameterized according to job categories and applicable collective agreement provisions — accessible via an AI-powered contract generator — the group has standardized 100% of its templates. Trial period terminations are now notified via the platform, with automatic notice period calculation and legal archiving for 5 years. The group has reduced by 40% HR disputes related to trial period termination 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 renewal conditions and notice periods whose non-compliance can be costly. Workers, technicians, managers — each category has its own ceilings. Case law, meanwhile, 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 possible termination notification — now requires dematerialization and electronic signature. Certyneo offers you an eIDAS-compliant platform, audited and interfaceable with your HRIS to manage your contracts with complete peace of mind.

Try Certyneo free of charge and bring your HR contract process into compliance today.