Permanent vs Fixed-Term Contracts: Legal and Practical Differences

Introduction

The choice between an indefinite-term contract (Contrat à durée indéterminée - CDI) and a fixed-term contract (Contrat à durée déterminée - CDD) is one of the most structuring decisions in the employer-employee relationship. These two types of employment contracts are subject to distinct legal regimes, governed by the French Labour Code and regularly clarified by case law. Whilst the CDI constitutes the normal and general form of an employment contract, the CDD remains limited to expressly defined situations. This article guides you through the fundamental legal differences, practical obligations of each contract type, termination modalities and the added value of electronic signature for HR in daily contract management.

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1. Legal Nature and Founding Principles

The CDI: Common Law Contract

The indefinite-term contract is defined by Article L.1221-2 of the Labour Code as the normal and general form of employment relationship. It does not contain a fixed end date from the outset: it continues until terminated by one of the parties in accordance with legally prescribed procedures. This temporal indeterminacy is its primary characteristic and confers enhanced protection on the employee, particularly regarding dismissal.

A CDI may be concluded on a full-time or part-time basis, without part-time status modifying its legal nature. The trial period, optional but frequent, allows each party to assess the professional relationship before any definitive commitment. Its duration is capped by law (2 months for workers and employees, 3 months for supervisory and technical staff, 4 months for executives), with the possibility of renewal once if the applicable collective agreement provides for it.

The CDD: Derogatory Contract Subject to Strict Conditions

The CDD is an exceptional contract. Article L.1242-1 of the Labour Code establishes the principle that a CDD may only be concluded for the performance of a specific and temporary task. Conclusion outside the authorised cases exposes the employer to reclassification of the contract as a CDI by the employment tribunal, accompanied by damages for the employee.

The legal cases for recourse to a CDD are strictly enumerated in Article L.1242-2:

• Replacement of an absent employee or one whose contract is suspended

• Temporary increase in business activity

• Seasonal employment

• Certain positions for which it is customary not to use a CDI (sectors defined by decree or collective agreement)

A CDD concluded outside these grounds, or whose grounds are insufficiently precise in the written contract, is presumed to be a CDI. The mention of the reason for recourse in the contract is therefore not merely a formality: it is a condition of validity.

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2. Contractual Formalism and Mandatory Provisions

Drafting Requirements for CDI

Contrary to popular belief, a CDI is not necessarily required to be in writing for full-time employment, except where a collective agreement provides otherwise. However, the provision of a signed written contract remains strongly recommended to avoid disputes regarding agreed terms of employment. In practice, the employer is required to provide the employee with a copy of the prior notification of hiring (DPAE) and, where applicable, to communicate the essential information provided by Directive (EU) 2019/1152 of 20 June 2019, transposed into French law by decree of 1 November 2023 (working hours, remuneration, place of work, etc.).

For part-time CDIs, writing is mandatory and the contract must specify the agreed weekly or monthly duration, the distribution of hours throughout the week, and the procedures for any eventual modification of this distribution.

Mandatory Provisions for CDD

The CDD, conversely, must imperatively be established in writing (Article L.1242-12 of the Labour Code). In the absence of a written contract provided within two working days following hiring, the contract is deemed to be concluded for an indefinite term. The mandatory provisions include:

• Precise definition of the reason for recourse to the CDD

• Name and professional qualifications of the person being replaced, where applicable

• Date of term or minimum duration

• Designation of the position

• Title of the applicable collective agreement

• Duration of any trial period

• Amount of remuneration and its components

• Name and address of the supplementary pension fund

The use of an AI contract generator makes it possible to structure these mandatory provisions without risk of omission, ensuring that each CDD meets the legal requirements in force.

Duration and Renewal of CDD

The maximum duration of a CDD, including renewals, is in principle 18 months (Article L.1242-8-1). Exceptions exist: 9 months for a CDD concluded whilst awaiting the start of an employee recruited on a CDI, 24 months for contracts concluded abroad or in the event of exceptional export orders. The CDD may be renewed twice within its maximum duration. Upon expiry of the term, if the employment relationship continues without a new contract being concluded, the CDD automatically converts to a CDI.

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3. Contract Termination: Profoundly Different Regimes

Termination of CDI

A CDI may be terminated at the initiative of the employer (dismissal), the employee (resignation), or by mutual agreement (approved negotiated termination). Dismissal requires a genuine and serious cause, whether personal (misconduct, professional inadequacy, unfitness) or economic. The procedure is strictly governed: preliminary meeting, notification by registered letter with acknowledgement of receipt, observance of notice period. Non-compliance with these steps exposes the employer to penalties imposed by the employment tribunal.

Negotiated termination (Articles L.1237-11 to L.1237-16 of the Labour Code), introduced by Law n°2008-596 of 25 June 2008, permits an amicable separation with approval by the DREETS. It entitles the employee to unemployment benefits. Collective negotiated termination (RCC) applies to restructurings involving multiple employees without being assimilable to a labour saving plan (PSE).

Termination of CDD

A CDD is in principle inviolable before its term. Its early termination is strictly governed by Article L.1243-1 of the Labour Code and is only possible in five situations:

• Agreement of both parties

• Serious misconduct by the employee or employer

• Force majeure

• Unfitness established by the occupational health physician

• Hiring of the employee on a CDI with another employer

Any premature termination outside these cases exposes the employer to payment of all salaries remaining due until the end of the contract, as well as damages.

The CDD End-of-Contract Indemnity: Precarity Premium

Upon expiry of a CDD (except in cases of reclassification, employee refusal of a CDI offered at the end, or seasonal contract), the employee receives a contract termination indemnity equal to 10% of total gross remuneration received. Certain collective agreements provide more favourable rates. This precarity premium compensates for the instability inherent in a CDD and is not due in the event of termination for serious misconduct or force majeure.

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4. Electronic Signature: Accelerator of HR Compliance

Legal Value of Electronic Signature on Employment Contracts

Since the entry into force of the eIDAS regulation (n°910/2014) and its transposition into French civil law in Articles 1366 and 1367, electronic signature has the same legal value as a handwritten signature provided it satisfies the required conditions of authenticity and integrity. For employment contracts, advanced electronic signature (AES) or qualified electronic signature (QES) constitutes the adapted level of assurance, offering complete traceability and robust non-repudiation.

An employer wishing to have CDIs and CDDs signed electronically must ensure that the solution chosen complies with the eIDAS regulation, that it retains evidence of signature (timestamping, electronic certificate, audit trail) and that the employee has consented to the use of the electronic procedure. Our comprehensive guide to electronic signature details the signature levels and their suitability for various HR documents.

Operational Benefits for Contract Management

Dematerialisation of employment contracts (CDI, CDD, amendments, negotiated terminations) generates substantial gains: reduction of signature lead time from several days to a few hours, elimination of printing and paper storage costs, instant access to documents from any terminal. In the context of frequent recruitment or management of a population of seasonal CDDs, these benefits are particularly marked.

HR teams can also rely on downloadable contract templates that are pre-structured and compliant, incorporating mandatory provisions specific to each contract type. Combined with an electronic signature workflow, these templates reduce the risk of omitting legal requirements whilst accelerating onboarding of new colleagues.

Electronic Archiving and Preservation of Evidence

Retention of employment contracts signed electronically follows the same legal periods as for paper contracts: 5 years after the end of the contract for documents relating to the employment contract, in accordance with limitation periods under labour law. The signature solution must offer archiving with probative value, guaranteeing document integrity throughout the conservation period. To compare available market solutions, the electronic signature solution comparison will provide you with a structured overview of the criteria to evaluate.

Legal Framework Applicable to CDI and CDD Employment Contracts

Founding Texts of French Labour Law

The distinction between CDI and CDD is principally governed by the Labour Code, in Articles L.1221-1 et seq. for the CDI, and L.1241-1 to L.1248-11 for the CDD. These provisions have been profoundly reformed by the Macron Ordinances of 22 September 2017 (n°2017-1387), notably as regards the scale of compensation for dismissal damages where no genuine and serious cause is shown (Macron scale, Article L.1235-3 of the Labour Code).

European Directive 2019/1152 of the European Parliament and of the Council of 20 June 2019 on transparent and predictable working conditions in the European Union has strengthened employer information obligations, transposed into French law by decree n°2023-1004 of 30 October 2023. Employers must now provide in writing, on the first day of work, a set of essential information on terms of employment.

Legal Risks Associated with CDD

The principal risk of a CDD is reclassification as a CDI by the employment tribunal. Article L.1245-1 of the Labour Code provides that non-compliance with provisions relating to fixed-term contracts results, at the employee's request, in reclassification as a CDI. The reclassification indemnity cannot be less than one month's salary (Article L.1245-2). In addition to this reclassification indemnity, potentially add notice period compensation indemnity, statutory redundancy indemnity and damages for dismissal without genuine and serious cause.

The most frequently recorded grounds for reclassification by the Court of Cassation are: absence of written contract, imprecision of the grounds for recourse, abusive recourse to successive CDDs (succession of CDDs to fill a position linked to the normal and permanent activity of the business), and exceeding the maximum legal duration.

Electronic Signature and Probative Value

Electronic signature of employment contracts is governed by Articles 1366 and 1367 of the Civil Code, which transpose the eIDAS regulation (n°910/2014 of the European Parliament and of the Council of 23 July 2014). Article 1366 provides that "an electronic document has the same probative force as a document on paper support, provided that the person from whom it emanates can be duly identified and that it is established and retained in conditions such as to guarantee its integrity". Article 1367 clarifies that "the signature necessary for the perfection of a legal act identifies its author. It manifests his consent to the obligations flowing from this act".

The eIDAS regulation defines three levels of signature: simple, advanced and qualified. For employment contracts, advanced electronic signature (AES), based on a certificate and linked uniquely to the signatory, is generally adopted as a sufficient level of assurance. Qualified electronic signature (QES), issued by a qualified trust service provider (QTSP) appearing on the national trust list, offers the strongest legal presumption.

The GDPR (regulation n°2016/679 of 27 April 2016) also applies to the processing of personal data of signatories in the electronic signature process. The employer, as the data controller, must ensure that the signature solution chosen presents sufficient guarantees regarding the security and confidentiality of data, and must inform employees in accordance with Articles 13 and 14 of the GDPR.

Use Cases: CDI, CDD and Electronic Signature in Practice

Scenario 1 — An Industrial SME Managing Numerous Seasonal CDDs

An industrial SME of around 150 permanent employees strengthens its workforce each year with 80 to 100 seasonal CDDs over a four-month period. Previously, the HR department printed each contract in two copies, sent them by post to future employees, then awaited signature return before proceeding with the DPAE — with delays reaching 10 to 14 days, sometimes after the effective start of the contract, exposing the company to the risk of undeclared work.

By deploying an eIDAS-compliant electronic signature solution, the HR department generates each CDD from a pre-validated legal template, sends it to the future employee by SMS or email, and obtains signature in less than 24 hours in over 90% of cases. The signed contract is automatically archived with probative value. The average lead time from sending to signature has fallen from 9 days to less than 6 hours, reducing by 40% the time dedicated to the administrative management of seasonal contracts. Exposure to the risk of reclassification for absence of written contract provided within the time limits has been eliminated.

Scenario 2 — A Recruitment Firm Managing Executive CDI Mobilities

A recruitment intermediary firm working with major client accounts produces an average of 300 executive CDIs per year, involving negotiations on variable compensation, non-compete clauses and benefits in kind. Each contract is subject to several rounds of review before final signature. The traditional paper process typically mobilised an average of 3 weeks between the presentation of the offer and contract signature, sometimes generating candidate withdrawals during the process.

By adopting an electronic signature workflow with version management and complete audit trail, the firm has reduced the average CDI finalisation lead time to 5 working days. Stakeholders (candidate, HR Director of the client, firm lawyer) simultaneously access the document, comment and validate online. The post-offer withdrawal rate fell by 22% over the following financial year following deployment, according to the firm's internal estimate. The ROI calculator available on Certyneo allows you to estimate comparable gains for your structure.

Scenario 3 — A Distribution Group Managing Negotiated Terminations of CDIs

A retail chain with around one hundred stores and approximately 2,000 CDI employees generates several dozen negotiated terminations each year. Each file involves the signature of a Cerfa form (form 14598*01), a termination agreement and a final settlement. Paper management, decentralised across each store, led to errors in Cerfa completion, transmission delays to DREETS and risks of non-approval.

By centralising negotiated termination management via a platform combining electronic signature with the HRIS system, the central HR department validates each file before sending to signatories. The Cerfa form is automatically pre-populated from HRIS data, eliminating data entry errors. The rate of files returned by DREETS for completion has fallen from 18% to less than 3%. Centralised archiving guarantees complete traceability in the event of employment tribunal proceedings.

Conclusion

CDI and CDD are governed by fundamentally different legal logics: whilst the CDI offers stability and enhanced protection to the employee, the CDD meets precisely defined temporary needs, failing which the employer faces reclassification with serious financial consequences. Mastering these distinctions — contractual formalism, duration, grounds for recourse, termination regime — is essential to secure your HR policy.

Electronic signature today constitutes a major lever of compliance and operational efficiency for the management of these contracts, whether CDI executives, seasonal CDDs or negotiated terminations. By guaranteeing provision within legal time limits, traceability of consents and archiving with probative value, it significantly reduces legal risks.

Ready to secure your employment contracts through electronic signature? Discover the Certyneo solution for HR or create your free account to test the platform today.