Unlimited vs. Fixed-Term Employment Contract: Complete Guide

Introduction

In the landscape of French employment law, the question of unlimited vs. fixed-term employment contract arises with every recruitment. On one side, the permanent contract (Contrat à Durée Indéterminée or CDI) offers stability and continuity; on the other, the fixed-term contract (Contrat à Durée Déterminée or CDD) addresses specific needs and is regulated by law. Yet confusing these two contractual forms or drafting them poorly exposes the employer to costly judicial requalifications and the employee to involuntary precarity. This article details the characteristics, obligations, risks and best practices associated with each contract type, whilst incorporating the growing role of electronic signature for HR in securing and accelerating recruitment processes.

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Definitions and Legal Foundations of the Two Contract Types

The Unlimited-Duration Contract (CDI): The Standard Reference

According to Article L. 1221-2 of the French Labour Code, the CDI is the normal and general form of the employment relationship. It contains no predetermined termination date and can be terminated by either party under regulated conditions: resignation, dismissal, mutual termination or retirement. The CDI may be full-time or part-time, but in both cases, the duration of the relationship is not time-limited.

The absence of written documentation does not invalidate the CDI: a verbal contract is legally valid for a full-time CDI. However, best practice strongly recommends a written contract to secure specific clauses (probationary period, non-compete clause, variable remuneration, etc.).

The Fixed-Term Contract (CDD): A Regulated and Exceptional Resource

The CDD is governed by Articles L. 1242-1 to L. 1242-13 of the French Labour Code. It may only be concluded for the performance of a precise and temporary task, and solely in the limited cases exhaustively listed by law:

• Replacement of an absent employee (illness, maternity leave, etc.)

• Temporary increase in activity

• Seasonal employment or sectors where CDD use is established (hospitality, agriculture, entertainment)

• Supported employment contracts (CDD for older workers, CDD for integration)

Unlike the CDI, the CDD must be drawn up in writing without exception and given to the employee within two working days of hire, on pain of requalification to a CDI (Articles L. 1242-12 and L. 1245-1). It must state the reason for use, the specific end date or minimum duration, the position, remuneration and applicable collective agreement.

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Durations, Renewals and Legal Limits

Maximum Duration of CDD and Renewal Rules

Since the El Khomri Act of 2016 and the Macron Ordinances of 2017, certain renewal and maximum duration rules may be negotiated by industry agreement. In the absence of such an agreement, common law provides:

• Maximum total duration: 18 months (including renewals), except in exceptions (replacement of an executive awaiting start date: 24 months; contracts abroad: 24 months; exceptional order: 24 months)

• Number of renewals: Maximum of 2, provided that the total duration does not exceed the legal ceiling

• Waiting period: Between two CDDs for the same position, a period equal to one-third of the contract duration (or one-half if the contract is less than 14 days) is mandatory, except in specific cases

The CDI: Indeterminate Duration but Not Unconditional

If the CDI has no fixed term, it is nonetheless subject to constraints. The probationary period is limited to:

• 2 months for workers and employees

• 3 months for supervisors and technicians

• 4 months for senior managers

It may be renewed once if an industry agreement provides for it. Beyond that, any termination must comply with legal dismissal or resignation procedures, which fundamentally distinguishes the CDI from the CDD.

The Specific Case of the Site or Project-Based CDI

Introduced by the 2017 Ordinances (Article L. 1223-8 of the Labour Code), the site-based CDI is a contract of indefinite duration whose end is linked to the completion of a defined project. It therefore presents an interesting hybrid nature: no fixed term (unlike the CDD), but a predefined legitimate termination cause. It is authorised in sectors that benefited from such provisions by custom or agreement prior to 2017, and may now be extended by collective agreement.

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Compensation, Rights and Compared Obligations

The Fixed-Term Contract End-of-Service Bonus

At the end of a CDD (except in the case of early termination for gross misconduct, force majeure or mutual agreement), the employee receives an end-of-contract indemnity equal to 10% of total gross remuneration paid during the contract (Article L. 1243-8). This indemnity may be reduced to 6% by industry agreement if the employer provides professional training opportunities. It does not apply to seasonal CDDs or CDDs concluded under employment policy schemes.

Compared Rights of Employees in CDI and CDD

| Criterion | CDI | CDD | |---|---|---| | Length of service for dismissal | Yes | No (no dismissal, except for gross misconduct) | | Access to bank credit | Easy | Limited | | Right to training | Identical | Identical | | Termination compensation | Notice + statutory benefits | End-of-service bonus 10% | | Access to social housing | Enhanced priority | Applications often rejected |

These differences explain why employees on CDD contracts are considered to be in relative precarity, which led the legislator to strictly regulate the cases for recourse to fixed-term contracts.

Requalification to CDI: The Major Risk of Poorly Drafted CDD

Requalification is pronounced by the Labour Court when:

• The CDD contains no legal reason for use

• The written contract was not provided within two working days

• The employee has sustainably occupied a position linked to the normal and permanent business activity of the company

• Rules regarding waiting periods or renewal have been breached

In case of requalification, the employee is entitled to a requalification indemnity of at least one month's salary (Article L. 1245-2), without prejudice to damages for wrongful dismissal without valid and genuine reason if the relationship is subsequently terminated. To avoid these risks, careful drafting and timely signature are essential: electronic signature for businesses makes it possible to definitively date the provision of the contract and timestamp the signatures of both parties.

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Digitalisation of Employment Contracts: The Role of Electronic Signature

Legal Value of Electronic Signature on HR Contracts

Since the entry into force of Regulation eIDAS No. 910/2014 and its transposition into French law (Ordinance of 8 October 2017), electronic signature has the same legal value as handwritten signature provided it meets the requirements of qualified level or, for many routine transactions, advanced level. For employment contracts (CDI and CDD alike), an advanced electronic signature based on a qualified certificate is generally sufficient.

Article 1366 of the French Civil Code specifies that an electronic document has the same probative force as a paper document provided that the person from whom it emanates can be properly identified and it is established and kept in conditions that guarantee its integrity. These conditions are precisely met by a certified platform such as Certyneo, for which you can consult the complete electronic signature guide to deepen your understanding of compliance levels.

Practical Advantages for HR Teams

Digitalising employment contracts via electronic signature provides several measurable benefits:

• Speed: a CDD can be signed in minutes, even remotely, which is crucial for urgent replacements

• Traceability: each signature is timestamped and associated with an unfalsifiable audit trail

• Compliance with legal deadline: the provision of the contract within 2 working days is proven by timestamping, eliminating the risk of requalification based on this ground

• Secure archiving: contracts are stored in a digital safe deposit box that complies with legal retention requirements (30 years for employment contracts in France)

To assess the return on investment of such a solution in your organisation, Certyneo's ROI calculator provides you with a personalised estimate in just a few clicks.

Integration into HRIS and Onboarding Processes

Modern electronic signature platforms integrate with major HRIS systems (Workday, SAP SuccessFactors, Lucca, Factorial) via standardised APIs. This allows the signature of the contract to be automatically triggered upon completion of an accepted offer process, without manual re-entry. Certyneo's AI-powered contract generator goes further by enabling automatic production of the correct contract type (CDI, CDD, amendment) based on position data, reducing drafting errors at source.

Applicable Legal Framework for Employment Contracts

Labour Code: The Founding Texts

The distinction between unlimited-duration contract and fixed-term contract is governed by Articles L. 1221-1 to L. 1243-13 of the Labour Code. Article L. 1221-2 establishes the CDI as the default contractual form, whilst Articles L. 1242-1 to L. 1242-13 exhaustively define the cases for recourse to the CDD. The sanction for non-compliance with these provisions — requalification to a CDI — is provided for in Article L. 1245-1.

Article L. 1242-12 requires the written drafting of the CDD and its provision within two working days following hire. Article L. 1243-8 sets the end-of-CDD indemnity at 10% of total gross remuneration. The project-based CDI is regulated by Articles L. 1223-8 to L. 1223-13, arising from Ordinance No. 2017-1387 of 22 September 2017.

Electronic Signature: eIDAS Regulation and Civil Code

The legal value of electronic signature on employment contracts rests on:

• Article 1366 of the Civil Code: an electronic document has the same probative force as a paper document provided the author is identified and the integrity of the document is guaranteed.

• Article 1367 of the Civil Code: electronic signature requires the use of a reliable identification procedure guaranteeing the link between the signature and the act signed.

• Regulation eIDAS No. 910/2014 (European Union): defines three levels of electronic signature (simple, advanced, qualified) and their cross-border legal value. Advanced level is generally recommended for routine HR contracts.

• Ordinance No. 2017-1426 of 4 October 2017: transposes eIDAS into French law and confirms equivalence with handwritten signature.

• ETSI EN 319 132 standard: technical standard for advanced electronic signature formats (XAdES, CAdES, PAdES) guaranteeing interoperability and longevity.

GDPR and Data Protection in HR Contracts

The collection of personal data necessary for electronic signature (identity, professional email, telephone number for OTP authentication) is subject to the General Data Protection Regulation No. 2016/679 (GDPR). The employer, as data controller, must:

• Inform the employee of the purpose of processing (Article 13 GDPR)

• Limit the retention of authentication data to the necessary duration

• Guarantee the security of data in the signature platform

• Maintain a record of processing activities including signature processing

Non-compliance with these obligations exposes the employer to CNIL sanctions of up to 4% of global annual turnover (Article 83 GDPR). Certified platforms such as Certyneo integrate these constraints by design (privacy by design).

Use Cases: Digitalising CDI and CDD Contracts with Electronic Signature

Scenario 1 — An Industrial SME Managing Dozens of Seasonal CDDs Each Year

An industrial SME of approximately 150 permanent employees recruits between 40 and 60 seasonal workers each year for periods of 4 to 8 weeks to cope with production peaks. Before digitalisation, CDD contracts were printed, sent by post or delivered in person, then scanned for archiving. The legal two-day provision deadline was regularly exceeded due to lack of field manager availability, exposing the company to requalification risks.

By adopting an electronic signature solution integrated with its HRIS, the SME reduced the average signature time from 4.5 days to less than 6 hours. Contracts are automatically generated from position data, sent by SMS and email, and signed on mobile by seasonal workers before their first day of work. Certified timestamping eliminates any risk related to the legal deadline. According to industry feedback (source: Markess by exaegis reports, 2024-2025), this type of deployment reduces administrative time associated with managing temporary contracts by 70 to 85%.

Scenario 2 — A Management Consulting Firm Recruiting Senior Managers in CDI Remotely

A consulting firm of approximately forty consultants practices hybrid recruitment, with candidates located in several French and European cities. Signing CDI contracts physically required either a candidate visit or the sending of a registered letter with acknowledgement of receipt, extending the process by 5 to 10 working days — a window during which the candidate could accept a competing offer.

By deploying an advanced-level electronic signature compliant with eIDAS, the firm reduced this time to less than 24 hours in 90% of cases. Sensitive clauses (non-compete, confidentiality) benefit from enhanced probative force thanks to the audit trail. The offer acceptance rate increased by 12 points over 18 months, correlated with the streamlining of the onboarding process. Compliance with eIDAS Regulation — detailed in Certyneo's eIDAS guide — guarantees the legal value of contracts signed from abroad.

Scenario 3 — A Hospital Group Managing Urgent Medical Replacements in CDD

A hospital group of approximately 900 beds continuously manages replacements of doctors, nurses and healthcare assistants in the form of replacement CDDs. The particularity of this sector: replacements are sometimes decided in the hours preceding the start of work, making paper signature materially impossible within the legal deadline.

Thanks to a mobile electronic signature solution, CDD replacement contracts are signed by the healthcare professional from their smartphone, including from outside the facility. The group has thus eliminated all contractual delivery delays, reducing its exposure to labour court disputes over requalification. The average cost of a labour court dispute in France is estimated at between 3,000 and 15,000 euros (excluding indemnities), so the savings made over 2 years have far exceeded the cost of subscription to the platform. To explore electronic signature solutions tailored to the healthcare sector, Certyneo offers a dedicated offering.

Conclusion

The distinction between unlimited and fixed-term employment contract amounts to far more than a question of duration: it touches on the fundamental rights of employees, the obligations of employers and the considerable legal risks associated with any form or substantive irregularity. The CDI remains the protective reference standard, the CDD a legitimate but strictly regulated tool whose slightest breach can prove costly.

In this context, electronic signature is not merely a modernisation tool: it constitutes a legal safety net by proving timely provision, by timestamping each signature and by guaranteeing the integrity of archived contracts. Certyneo supports you in this transition with an eIDAS-compliant solution, integrable with your existing HR tools.

Ready to secure your employment contracts? Start free on Certyneo or discover our pricing tailored to your team size.