Trial Period: Legal Duration and Termination

The trial period is a fundamental contractual phase in the employment relationship: it allows the employer to assess the employee's skills, and conversely allows the employee to verify that the position is suitable for them. Yet its rules — maximum durations, renewal conditions, notice periods for termination — are sources of numerous disputes before the employment tribunal (Conseil de prud'hommes). In 2025–2026, the digitalisation of HR processes, notably via electronic signatures for HR, is transforming the way contracts including the trial period are concluded and archived. This guide presents the complete legal framework, pitfalls to avoid and best practices to secure your hiring.

Legal Trial Period Durations by Contract Type

The duration of the trial period varies depending on the nature of the employment contract and the professional category of the employee. These durations are set by the Labour Code and cannot be exceeded unless a collective agreement is more favourable to the employee.

Permanent Contract (CDI)

Since the labour market modernisation law of 25 June 2008, the maximum trial period durations for permanent contracts are clearly established:

• Workers and employees: 2 months

• Supervisory staff and technicians: 3 months

• Senior management: 4 months

These durations are measured in calendar time, unless otherwise provided by the applicable collective agreement. Note: suspension of the trial period (due to illness, work accident or paid leave taken at the employer's initiative) extends the initial duration accordingly.

Fixed-Term Contract (CDD)

For fixed-term contracts, the trial period duration is proportional to that of the contract:

• For contracts of 6 months or less: 1 day per week worked, up to a maximum of 2 weeks

• For contracts exceeding 6 months: 1 month maximum

The Court of Cassation (Soc., 13 November 2019, no. 18-15.442) confirmed that any clause setting a longer duration is deemed unwritten.

Special Contracts: Apprenticeship and Work-Based Training

The apprenticeship contract provides for a trial period of 45 days, during which either party can terminate freely. After this period, termination is subject to much stricter rules. The work-based training contract follows the rules of fixed-term or permanent contracts depending on the form chosen.

Renewal of the Trial Period: Conditions and Limits

A strictly regulated renewal

The trial period of a permanent contract may be renewed only once, subject to three cumulative conditions set out in Article L.1221-21 of the Labour Code:

• An extended sectoral agreement must expressly provide for it

• The employment contract or letter of engagement must mention the possibility of renewal

• The express consent of the employee must be obtained before the end of the initial period

The employee's consent cannot be presumed or tacit. Mere silence or failure to formally object does not constitute valid consent according to consistent case law. To secure this renewal, many employers now opt for eIDAS-compliant electronic signature, which precisely time-stamps consent and produces incontestable proof.

Maximum Durations After Renewal

With renewal, the total maximum durations are:

• Workers and employees: 4 months

• Supervisory staff and technicians: 6 months

• Senior management: 8 months

Any trial period exceeding these limits is null and void, which may transform a termination into dismissal without real and serious cause, with associated indemnity consequences.

Trial Period Termination: Procedure and Notice Periods

Termination by the Employer

The employer can end the trial period without having to justify the decision and without following disciplinary procedures. However, the termination must not be abusive, discriminatory or based on an unlawful reason (health status, pregnancy, union activity, etc.). In the event of abusive termination, the employee may obtain damages before the Employment Tribunal.

The notice periods to be observed by the employer are set out in Article L.1221-25 of the Labour Code:

• Presence of less than 8 days: 24 hours

• Presence between 8 days and 1 month: 48 hours

• Presence between 1 and 3 months: 2 weeks

• Presence of more than 3 months: 1 month

If the employer fails to observe these periods, they must pay compensation equal to the unworked notice period.

Termination by the Employee

An employee wishing to end their trial period has a notice period of 48 hours, reduced to 24 hours if their presence is less than 8 days. No justification is required, and no termination allowance is due. The termination takes the form of simple written notification, preferably by registered mail with acknowledgement of receipt or — an increasingly common solution — via electronic signature for employment contracts enabling immediate archiving.

Special Cases: Protected Employees and Pregnant Women

The trial period is not incompatible with protected status, but termination is subject to strengthened rules. For an employee representative whose mandate begins during the trial period, termination requires the authorisation of the labour inspector. For an employee whose pregnancy is declared, termination is null if the employer is aware of it (Article L.1225-4 of the Labour Code).

Digitalisation of Contracts and Securing the Trial Period

The Contribution of Electronic Signature to HR Management

Qualified or advanced electronic signature, compliant with eIDAS Regulation No. 910/2014, provides triple added value for trial period management:

• Certified time-stamping: the date of signature of the contract and any renewal amendment is incontestable

• Evidential archiving: the electronically signed document has the same legal value as written paper (Article 1366 of the Civil Code)

• Consent traceability: essential to prove that the employee has expressly accepted the renewal of their trial period

Modern SaaS solutions allow integration of these flows into existing HRIS systems via API, reducing administrative onboarding time by an average of 70% according to sector feedback from 2024–2025. To go further, the electronic signature ROI calculator allows you to estimate concrete gains for your organisation.

Compliant Contract Templates and Best Practices

The use of downloadable contract templates pre-prepared and regularly updated in light of legislative changes significantly reduces the risk of drafting errors. Badly written contracts — omitting mention of the possibility of renewal, or setting an excessive duration — can invalidate the entire trial period and expose the employer to an employment tribunal review.

Key points to watch for when drafting are:

• Explicitly mention the duration of the trial period and its renewal possibility if the applicable collective agreement permits it

• Specify the professional category to justify the duration chosen

• Incorporate an electronic archiving clause for any future amendments

Legal Framework Applicable to the Trial Period

The trial period is governed by a set of legislative and regulatory texts that employers and employees must master to avoid disputes.

Labour Code — Main Provisions

• Article L.1221-19: sets maximum trial period durations for permanent contracts by professional category (2 months workers/employees, 3 months supervisory staff/technicians, 4 months senior management).

• Article L.1221-20: recalls that the collective agreement may provide for shorter, more favourable durations for the employee.

• Article L.1221-21: strictly frames renewal (extended sectoral agreement, contractual mention, express employee consent).

• Article L.1221-24: sets out the rules for calculating the duration of the trial period when hiring follows an internship.

• Article L.1221-25: imposes notice periods in case of termination by the employer.

• Articles L.1225-4 and L.1225-5: protect a pregnant employee against any trial period termination once her pregnancy is known.

Legal Value of Electronically Signed Contracts

• Article 1366 of the Civil Code: "An electronic writing has the same probative force as a writing on paper, provided that the person from whom it originates can be duly identified and that it is established and preserved in conditions such as to guarantee its integrity."

• Article 1367 of the Civil Code: defines electronic signature as "the use of a reliable identification process guaranteeing its connection to the deed to which it is attached".

• eIDAS Regulation No. 910/2014 (EU) — and its successor eIDAS 2.0 currently being rolled out — establishes three levels of electronic signature (simple, advanced, qualified) with a legal presumption of reliability for qualified signature (Article 25, §2).

GDPR and Processing of Candidate Data

Regulation (EU) 2016/679 (GDPR) applies from the moment personal data is collected during recruitment. The employer must:

• Inform the employee of the purpose of processing their data in the contract

• Limit data retention to necessary periods (in practice, the duration of the statute of limitations for employment tribunal claims: 3 years for wage claims, 5 years for liability claims)

• Ensure that electronic signature providers comply with GDPR (EU hosting, signed DPA)

Key Case Law

• Cass. Soc., 13 November 2019, no. 18-15.442: nullity of any fixed-term contract trial period exceeding the legal limit

• Cass. Soc., 26 November 2020, no. 19-15.737: tacit renewal of the trial period is null

• Cass. Soc., 8 April 2021, no. 19-14.605: discriminatory termination during the trial period entitles an employee to damages

Concrete Use Case Scenarios

Scenario 1 — SME of 45 Employees in Digital Services Managing Frequent Hiring

An SME in the digital services sector carrying out around twenty recruitments per year faced a twofold problem: employment contracts drafted with incorrect trial period durations for the senior management category (3 months instead of 4), and lack of formal proof of consent to renewal. After two employment tribunal reviews in two years, the HR department implemented an advanced electronic signature flow for all employment contracts. Result: zero disputes on contract form in 18 months, average signature time reduced from 5 days to less than 4 hours, and automatic archiving in the HRIS with certified time-stamping. The estimated HR productivity gain represents approximately 2 working days per month.

Scenario 2 — Industrial Group Renewing Trial Periods for Senior Managers

An industrial group of intermediate size (approximately 600 employees) practised renewal of trial periods for its senior managers through simple email exchanges, without clear traceability of the employee's express consent. Following advice from the internal legal department highlighting the risk, the group deployed an SaaS electronic signature solution integrated with its HRIS. Each renewal request now generates a structured document signed electronically by both parties before the end of the initial period, with time-stamped proof of sending and acceptance. This process has reduced by 90% the risk of renewal invalidity and simplified annual HR audits.

Scenario 3 — Recruitment Firm Managing Successive Fixed-Term Contracts for Clients

A firm specialising in temporary recruitment of technical profiles assists its SME/micro-enterprise clients in drafting and managing fixed-term contracts. These contracts of 3 to 6 months systematically include a proportional trial period, the calculation of which is a frequent source of error (confusion between working days and calendar days). The firm integrated a contract generator parameterised by fixed-term contract duration, combined with an electronic signature solution, allowing its clients to sign and archive contracts in less than an hour. Automatic reminders before the end of the trial period enable managers to anticipate the termination or confirmation decision in 100% of cases, compared to 60% previously.

Conclusion

The trial period is a key moment in the employment relationship, subject to a precise legal framework that every employer must master: maximum durations by professional category, strict renewal conditions, mandatory notice periods in case of termination. Errors in this area expose organisations to costly disputes and the reclassification of termination as dismissal without real and serious cause.

The digitalisation of contract management — notably via eIDAS-compliant electronic signature — provides a concrete answer to these challenges: certified time-stamping, proof of consent, evidential archiving. These tools are no longer reserved for large groups; they are accessible to all organisations, regardless of size.

To secure your employment contracts from the trial period onwards, discover the Certyneo solution and try our platform free of charge.