Trial Period: Legal Duration and Termination

The trial period is an essential contractual phase in any employment relationship. It allows the employer to assess the employee's competence and the employee to verify that the position meets their expectations. However, its rules — maximum duration, renewal conditions, notice periods in case of termination — are often poorly understood, exposing companies to significant legal risks. This article reviews the regulations in force in 2026, best practices to adopt and modern tools, particularly electronic signature for HR, which make it possible to secure every step of contract management.

Legal Duration of the Trial Period According to Contract Type

The duration of the trial period varies depending on the nature of the employment contract and the professional category of the employee. The Labour Code, in Articles L. 1221-19 to L. 1221-26, sets mandatory ceilings that employers cannot exceed, even with the employee's consent.

Permanent Contract (CDI): Maximum Durations by Category

For permanent employment contracts (CDI), the initial maximum durations are as follows:

• Workers and employees: 2 months

• Supervisory staff and technicians: 3 months

• Managers: 4 months

These durations may be reduced by collective bargaining agreement or sectoral agreement, but cannot under any circumstances be extended beyond the legal ceilings by simple individual agreement between the parties. It is important to note that the trial period must be expressly stipulated in the employment contract or engagement letter to be enforceable against the employee.

Fixed-Term Contract (CDD): a Trial Period Proportional to Contract Duration

For fixed-term employment contracts (CDD), the duration of the trial period is calculated at the rate of one day per week of work, up to:

• 2 weeks for CDDs with a duration of less than or equal to 6 months

• 1 month for CDDs of more than 6 months

No collective bargaining agreement may extend these durations for CDDs. The proportionality rule applies strictly, and any breach exposes the employer to contract reclassification or damages.

Special Cases: Apprenticeship Contracts, Temporary Work and Work-Study Contracts

Apprenticeship contracts do not have a trial period as such, but an observation period of 45 calendar days during which either party may terminate the contract without justification. For temporary work contracts, the trial period is calculated at the rate of one day per week, up to 2 days for assignments of less than 1 month, and 3 days thereafter. These nuances are essential for HR departments managing multiple contractual profiles simultaneously.

Renewal of the Trial Period: Strict Conditions

The law allows renewal of the trial period, but only under strictly defined conditions. Only one renewal is possible, and only when expressly provided for in an extended sectoral agreement. The sole wish of the employer or an individual agreement is not sufficient.

Cumulative Conditions for Renewal

For a renewal to be valid, three conditions must be met simultaneously:

• An extended sectoral agreement must expressly authorise renewal for the professional category concerned.

• Renewal must be provided for in the employment contract or initial engagement letter, or in an amendment signed before the expiry of the initial period.

• The employee must have given express consent to the renewal, in an unequivocal manner. The case law of the Court of Cassation is consistent on this point: the mere continuation of work does not constitute acceptance.

In the event of valid renewal, the total durations (initial period + renewal) may not exceed: 4 months for workers and employees, 6 months for supervisory staff and technicians, and 8 months for managers.

Express Consent of the Employee: a Major Documentary Issue

The requirement for express consent from the employee for renewal is a central documentary issue. A simple verbal exchange does not constitute sufficient proof in the event of dispute. This is precisely the context in which the digitisation of HR documents takes on its full significance. Using electronic signature compliant with eIDAS to formalise the renewal amendment guarantees traceability, time-stamping and document integrity. The Certyneo solution allows you to obtain this consent in just a few minutes, with a complete audit trail.

Termination of the Trial Period: Rules and Notice Periods

During the trial period, both the employer and the employee may terminate the contract freely, without having to justify their decision and without severance pay. This freedom is, however, subject to mandatory notice periods, introduced by the Act of 25 June 2008 on modernisation of the labour market.

Notice Periods Incumbent on the Employer

When it is the employer who terminates the trial period, they must observe a notice period calculated on the basis of the employee's length of service in the company:

• Less than 8 days of service: 24 hours

• Between 8 days and 1 month of service: 48 hours

• Between 1 and 3 months of service: 2 weeks

• More than 3 months of service: 1 month

If the employer does not observe this period, they must pay the employee compensation equal to the salary corresponding to the duration of the notice period not observed. This compensation is owed even if the termination occurs during the trial period and not after.

Notice Periods Incumbent on the Employee

When it is the employee who terminates the trial period, they must observe a notice period of:

• 24 hours if their length of service in the company is less than 8 days

• 48 hours beyond 8 days of service

These periods are mandatory and apply even in the absence of contractual provision.

Abusive Termination: Limits to the Freedom of Termination

Although the trial period permits termination that is in principle free, this freedom has important case law limitations. Termination is considered abusive — and therefore liable to give rise to damages — in several cases: termination motivated by a discriminatory reason (pregnancy, state of health, origin, etc.), termination occurring in a context suggesting misuse of the trial period (for example, systematic use of trial periods to perform occasional work without permanent hiring), or termination notified abruptly without respecting customary procedures.

It is therefore strongly advised to formalise the notice of termination in writing, via a time-stamped and traceable document. A comprehensive guide to electronic signature will help you understand how to secure these HR documents from the formalisation of the initial contract onwards.

Trial Period and Digitisation: Securing Every Step

Digitised management of the trial period represents a major lever for performance and compliance for companies. From delivery of the initial contract to notification of termination or confirmation of permanent status, each step can — and should — be covered by a secure electronic document.

Formalisation of the Initial Contract and Trial Clause

The trial period clause must appear expressly in the employment contract signed by both parties. A contract signed electronically via a solution compliant with the eIDAS regulation has probative value equivalent to a handwritten document (Article 1366 of the Civil Code). Advanced electronic signature — at minimum — is recommended for employment contracts, with identification of the signatory and formalised consent. For senior positions and sensitive roles, qualified electronic signature offers the highest level of legal security.

Consulting the comparison of electronic signature solutions makes it possible to identify the solution best suited to the volume and requirements of your organisation.

Management of Amendments and Termination Notifications

Trial period renewal amendments, termination notifications and confirmations of permanent status are all HR documents that benefit from secure digitisation. The traceability offered by solutions such as Certyneo — with qualified time-stamping, detailed audit trail and probative archiving — meets evidential requirements in the event of employment tribunal proceedings. For HR departments managing large volumes, the dedicated ROI calculator allows you to estimate the time savings and economies achieved by digitising these processes.

Applicable Legal Framework for the Trial Period

The trial period is governed by a set of legal and collective provisions that define its modalities, its limits and the obligations of the parties.

Labour Code — Articles L. 1221-19 to L. 1221-26: These articles form the legal foundation of the trial period in permanent contracts. They set the initial maximum durations by professional category, the conditions for renewal (extended sectoral agreement + express consent of the employee), and the mandatory notice periods in case of termination. Any breach of legal durations is sanctioned by reclassification of the trial period as a permanent contract.

Labour Code — Articles L. 1242-10 and L. 1251-14: These articles specifically govern the trial period in CDDs and temporary work contracts, with the principle of proportionality to the duration of the contract.

Act No. 2008-596 of 25 June 2008 on modernisation of the labour market: This Act profoundly reformed the trial period, notably by introducing standardised maximum durations and mandatory notice periods.

Civil Code — Article 1366: This article recognises the legal value of electronic documents: "An electronic document is admissible as evidence in the same manner as a paper document, provided that the person from whom it emanates can be duly identified and that it is established and preserved in conditions that guarantee its integrity." This provision is fundamental to the validity of employment contracts and amendments signed electronically.

Civil Code — Article 1367: It defines electronic signature and specifies that qualified signature creates an irrebuttable presumption of reliability, whereas advanced signature remains subject to judicial appraisal.

eIDAS Regulation No. 910/2014 (EU) — applicable in French law by the primacy of European law: This regulation defines three levels of electronic signature (simple, advanced, qualified) and their probative value in the European Union. Qualified electronic signature is equivalent to handwritten signature in all Member States.

GDPR No. 2016/679: The personal data collected when signing electronically (identification data, traceability metadata) constitute personal data. Their processing must comply with the principles of minimisation, purpose and security. The audit trails generated must be subject to a defined and documented retention policy.

Case Law of the Court of Cassation: The Social Chamber of the Court of Cassation has repeatedly recalled that renewal of the trial period without express consent of the employee is void, and that discriminatory termination during the trial period engages the employer's liability even in the absence of a duty to state reasons (Cass. soc., consistent judgements since 2010).

Legal Risks: The absence of written formalisation of the trial period, the breach of legal durations, or failure to observe notice periods expose the employer to employment tribunal convictions that can amount to several months' salary in damages and interest, independent of the legally due compensation payments.

Usage Scenarios: Trial Period and Electronic Signature

Digitisation of trial period management applies to very varied contexts. Here are three representative scenarios that illustrate the concrete benefits of a structured and electronically secure approach.

Scenario 1: An SME of Digital Services with Strong Growth

An SME in the digital services sector of around 80 employees makes on average 30 recruits per year, of which 40% are senior positions with a renewable 4-month trial period. Before digitisation, the HR department managed trial period renewals by registered mail, with return times sometimes exceeding 10 days and several reminders necessary. After implementing an advanced electronic signature solution, the time to formalise renewal amendments fell from 8-10 days to less than 48 hours. The risk of tacit renewal not formalised — and therefore legally void — has been eliminated. The time-stamped audit trail now constitutes solid evidence in the event of employment tribunal dispute. The time saving estimated by the HR department is around 2 person-days per month on trial period management alone.

Scenario 2: a Distribution Group Managing Seasonal Fixed-Term Contract Recruitment

An intermediate-sized distribution group employing around 600 people makes between 200 and 300 seasonal fixed-term contract recruits each year, mainly for periods of 3 to 6 months. Paper-based management of contracts and proportional trial period clauses generated frequent calculation errors and signature delays sometimes reaching 5 to 7 days, delaying effective start dates. After integration of an electronic signature solution with an automated contract generator, trial period duration calculation errors decreased by more than 90%, and the average signature time fell to less than 4 hours. Compliance with contractual clauses is ensured by models validated by the internal legal department, updated with each regulatory change.

Scenario 3: a Strategy Consulting Firm Recruiting Senior Consultants

An independent consulting firm of around twenty consultants regularly recruits senior profiles on permanent contracts, with renewable 4-month trial periods. The international dimension of some recruits (candidates based abroad at the time of signing) made paper-based management particularly cumbersome. Implementation of qualified eIDAS-compliant electronic signature made it possible to sign contracts with candidates located in other European countries without postal delays or travel. The probative value of qualified signature, recognised throughout the EU Member States, secures contracts concluded remotely. The firm estimates it has reduced by 60% the administrative time devoted to formalising employment contracts and their amendments.

Conclusion

The trial period is a precise legal mechanism whose rules — maximum durations, renewal conditions and notice periods in case of termination — must be scrupulously observed to avoid any employment tribunal risk. In 2026, digitisation of HR documents is the most effective response to the requirements of traceability, speed and compliance that these procedures impose.

Whether it is a matter of formalising an initial contract with a trial clause, obtaining express consent from the employee for renewal or notifying termination, each step benefits from being secured by an electronic signature compliant with the eIDAS regulation. Certyneo offers you a complete, intuitive and compliant solution to transform your HR processes.

Ready to secure your employment contracts? Discover Certyneo pricing and start today to digitise your HR processes in full compliance.