Indefinite-term vs Fixed-term Employment Contract

The question of choosing between an indefinite-term employment contract (CDI) and a fixed-term employment contract (CDD) is one of the most frequent in French labour law. For the employer, this choice commits the legal structure of the employment relationship, administrative obligations and litigation risks. For the employee, it determines job security, compensation rights and career prospects. In 2025, according to DARES, more than 87% of recruitments in France are made on CDD, but CDI remains the reference standard of the Labour Code. This article provides you with an exhaustive comparison of the two contractual forms, their respective legal frameworks, termination conditions and challenges related to dematerialisation.

The Indefinite-term Employment Contract (CDI): The Reference Standard

In French law, the CDI is defined by Article L. 1221-2 of the Labour Code as the normal and general form of the employment relationship. It does not provide for an extinction clause and can theoretically last throughout the employee's career. Its termination is only possible under specific conditions.

The Fundamental Characteristics of CDI

The CDI can be concluded without particular formality for a full-time contract, but drafting a written document is strongly recommended — and mandatory for part-time contracts (Article L. 3123-6 of the Labour Code). It can be full-time or part-time, with or without a probation period (whose duration varies according to professional category: 2 months for workers and employees, 3 months for supervisory staff and technicians, 4 months for executives, pursuant to Article L. 1221-19).

An employer wishing to terminate a CDI must follow a strict procedure: invitation to preliminary interview, reflection period, written notification of the decision, and payment of statutory severance pay after one year of service (Article L. 1234-9). In case of consensual termination (Article L. 1237-11 to L. 1237-16), the parties must obtain approval from the DREETS.

The Part-time CDI: Key Specifics

The part-time CDI requires a minimum of 24 hours per week, except for collective bargaining derogation or written request from the employee for personal reasons. The contract must specify the distribution of working hours, the conditions for modifying this distribution and the limits applicable to additional hours. Any failure exposes the employer to reclassification of the contract to full-time, with significant financial consequences. To automate the generation and signature of these sensitive documents, HR teams can rely on the electronic signature solution dedicated to human resources offered by Certyneo.

The Fixed-term Employment Contract (CDD): A Regulated Exception

Unlike the CDI, the CDD is an exceptional contract: it can only be concluded in cases specifically provided for by law (Article L. 1242-2 of the Labour Code). Its abusive use exposes the employer to judicial reclassification as a CDI, together with damages and interest.

Legal Grounds for CDD Recourse

The authorised cases for recourse are as follows:

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

• Temporary increase in business activity of the company

• Seasonal employment in specifically defined sectors

• Usage contracts in certain sectors (audiovisual, entertainment, education, hotel and catering) where it is customary not to use CDI

• Recruitment of unemployed persons facing particular insertion difficulties (subsidised contracts)

Article L. 1242-1 of the Labour Code establishes the general prohibition: "A fixed-term contract, regardless of its purpose, may not have as its object or effect the permanent filling of a position linked to the normal and permanent activity of the company."

Maximum Duration, Renewal and Notice Period

The maximum duration of a CDD varies depending on the reason: 18 months as a general rule, 9 months for waiting for a newly recruited CDI employee to take up their post or urgent work, 24 months for an exceptional export order or a contract executed abroad (Article L. 1242-8). The CDD is renewable twice, within the limit of its maximum duration. At the end of the contract, a notice period is imposed before resorting to a new CDD for the same position: one third of the contract duration if it exceeds 14 days, half its duration in other cases (Article L. 1244-3).

End-of-Contract Allowance and Rights of CDD Employees

At the normal end of a CDD, the employee receives a precarity allowance equal to 10% of the total gross compensation received during the contract (Article L. 1243-8), reduced to 6% if a collective agreement provides for counterparts in terms of training. The CDD employee benefits from the same rights as the CDI employee (paid leave, meal vouchers, access to collective facilities, equal pay for equivalent work) pursuant to the principle of equal treatment.

Comparative Table CDI / CDD: Decisive Criteria

To quickly visualise the differences between indefinite-term and fixed-term employment contracts, here are the essential criteria:

| Criterion | CDI | CDD | |---|---|---| | Duration | Unlimited | Limited (max. 18 to 24 months depending on reason) | | Formality | Written recommended (mandatory for part-time) | Written mandatory, provided within 2 working days | | Probation Period | Yes (variable duration) | Yes (limited to 1 day/week, max. 2 weeks if ≤ 6 months; 1 month if > 6 months) | | Early Termination | Dismissal or resignation regulated | Limited cases only (gross misconduct, agreement of parties, unfitness) | | End Allowance | Statutory severance pay (if termination by employer) | Precarity allowance 10% | | Renewal | N/A | 2 times, within the limit of maximum duration |

Electronic Signature of Employment Contracts: Issues and Best Practices

Since Ordinance No. 2016-131 of 10 February 2016 reforming contract law, and in accordance with eIDAS Regulation No. 910/2014, electronic signature is fully recognised for employment contracts. The Court of Cassation confirmed that electronic documents have the same probative force as paper, provided that the signatory's identity can be properly identified and the document's integrity is guaranteed.

Which Signature Level to Choose for an Employment Contract?

The eIDAS Regulation distinguishes three levels of electronic signature:

• Simple Electronic Signature (SES): sufficient for many routine acts, but offering limited traceability.

• Advanced Electronic Signature (AES): recommended for employment contracts, as it binds the signature to an identified signatory and detects any subsequent document modification.

• Qualified Electronic Signature (QES): maximum level, legal equivalent of handwritten signature in the EU; required for certain notarial or administrative acts.

For CDI and CDD, advanced electronic signature constitutes the recommended market standard endorsed by legal doctrine and the most advanced HR practices. To learn more about choosing the right level, consult our complete guide to electronic signature.

Operational Advantages of Dematerialisation

Electronic signature of employment contracts brings measurable benefits: reduction of signing delay from several days to a few hours, elimination of printing, postage and paper storage costs, unfalsifiable timestamped traceability, and facilitation of remote work or international recruitment. Companies using compliant eIDAS platforms report a reduction of 60 to 80% in administrative time related to contract management, according to sector studies published by HR transformation consulting firms.

To compare solutions available on the market before making your choice, our comparison of electronic signature solutions presents the essential technical and pricing criteria. Furthermore, if your company already uses a competing tool, our migration offer to Certyneo supports you without service interruption.

Reclassification as CDI: Risks to Anticipate

The major risk of CDD remains the possibility of judicial reclassification as CDI before the Employment Tribunal. This risk materialises in several situations:

• Absence of written document: the CDD must be provided to the employee within two working days following hire (Article L. 1242-13); failing that, it is deemed to be a CDI.

• Unlawful or imprecise reason: recourse to temporary increase in activity must be substantiated and dated; vague wording is sufficient to trigger reclassification.

• Exceeding maximum duration: any exceeding, even by one day, automatically triggers reclassification.

• Non-compliance with notice period: chaining two CDDs without respecting the statutory period is sanctioned.

In case of reclassification, the employer faces the risk of paying reclassification compensation (at least one month's salary), possible wage back-payments, and depending on the situation, damages for wrongful termination of the CDI so reclassified. Electronic signature, thanks to certified timestamping, constitutes irrefutable evidence of the contract delivery date, significantly reducing this procedural risk. To understand compliance mechanisms related to eIDAS Regulation, our guide on eIDAS 2.0 Regulation details the applicable technical and legal requirements.

Legal Framework Applicable to Employment Contracts and Their Signature

Labour Law: Fundamental Texts

The legal framework governing indefinite-term and fixed-term employment contracts is based primarily on the provisions of the Labour Code, specifically:

• Article L. 1221-2: enshrines CDI as the normal form of the employment relationship.

• Articles L. 1242-1 to L. 1248-11: define the conditions of validity, authorised reasons, maximum duration, renewal, notice period and sanctions applicable to CDD.

• Article L. 1243-8: sets precarity allowance at 10% of total gross compensation.

• Article L. 1242-13: requires submission of written CDD within two working days.

• Articles L. 1237-11 to L. 1237-16: govern approved consensual termination of CDI.

• Article L. 3123-6: makes written documentation mandatory for any part-time contract.

Legal Recognition of Electronic Signature

The probative value of electronic signature is established by several converging texts:

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

• Article 1367 of the Civil Code: "The signature necessary for the perfection of a legal act identifies its author. It manifests his consent to the obligations arising from that act. When it is affixed by a public officer, it confers authenticity on the deed. When it is electronic, it consists in the use of a reliable identification process guaranteeing its link with the deed to which it is attached."

• eIDAS Regulation No. 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services: defines the three levels of signature (simple, advanced, qualified) and their legal value in Member States. Qualified electronic signature benefits from a legal presumption of authenticity.

• Ordinance No. 2016-131 of 10 February 2016: integrated into the Civil Code full recognition of electronic documents and signatures.

Personal Data Protection

The collection and processing of personal data of signatories (identity, email address, timestamp) in the context of electronic signature of employment contracts are subject to the General Data Protection Regulation (GDPR) No. 2016/679. The employer, as the data controller, must in particular:

• Have a legal basis (contract performance, Article 6.1.b of GDPR)

• Inform the employee (Article 13 of GDPR)

• Ensure data security and their limited retention

• Conclude a compliant data processing agreement (Article 28) with the electronic signature service provider

Qualified trust service providers must also meet the requirements of standards ETSI EN 319 132 (XAdES format) and ETSI EN 319 122 (CAdES format) for the creation of advanced and qualified electronic signatures, ensuring interoperability and longevity of digital evidence.

Use Scenarios: CDI, CDD and Electronic Signature in Practice

Scenario 1 — An Industrial SME Managing Several Hundred Seasonal CDDs Per Year

An SME of 80 permanent employees operating in the agri-food sector recruits approximately 250 seasonal employees between April and September each year. Previously, managing CDDs involved printing, postal sending, telephone follow-up and manual filing of each contract. The average contract return time was 4 to 7 working days, regularly generating situations where employees were in position without a signed contract — a major legal risk.

By deploying an advanced electronic signature solution compliant with eIDAS, the SME reduced this delay to less than 2 hours on average. The contract delivery is automatically timestamped, satisfying the obligation of Article L. 1242-13 of the Labour Code. The rate of contentious reclassification for failure to deliver within deadlines was brought to zero. Estimated time savings: 3 FTE-weeks per seasonal recruitment campaign, representing a reduction of approximately 70% of HR administrative time dedicated to this task.

Scenario 2 — A Digital Transformation Consulting Firm Recruiting Executive Profiles in CDI

A consulting firm of about forty consultants recruits between 15 and 25 executives per year, often remotely or from abroad. Electronic signature of CDIs — including non-compete clause, confidentiality agreement and variable compensation annex — enables finalising the contractual relationship in less than one day, regardless of the future employee's time zone.

The firm observed a 40% reduction in withdrawal rate between offer accepted and effective signature, by shortening the window of uncertainty. The electronic audit trail (access logs, IP, timestamp of each signature) also constitutes robust evidence in case of dispute over contract content or acceptance date. The AI-powered contract generator integrated into the Certyneo platform, accessible via the AI contract generator, also enables personalising executive CDI templates in minutes.

Scenario 3 — A Health Facility Group Managing Frequent Replacements

A hospital group with approximately 1,200 beds regularly employs doctors and nurses on replacement CDDs, sometimes for durations of 24 to 72 hours. The operational constraint is extreme: the contract must be signed before taking up position, within timeframes incompatible with postal sending or even physical travel.

Implementation of mobile electronic signature (via link sent by SMS or email) enabled the HR department to have replacement contracts signed in less than 15 minutes, including outside working hours. GDPR compliance is ensured by processing data on servers hosted in the European Union. The annual report shows savings of €8,000 in postage and printing costs, and an 85% reduction in disputes related to the absence of written contract at the start of the shift.

Conclusion

The choice between an indefinite-term employment contract and a fixed-term employment contract is not merely a matter of comfort or flexibility: it involves precise legal obligations, rights for the employee and significant litigation risks for the employer if formalities are not observed. CDI remains the reference standard of French labour law, whilst CDD, subject to strict conditions, must be handled with rigour.

In this context, electronic signature constitutes a major lever for legal security and operational efficiency: it guarantees the traceability of contract delivery, reduces signing delays and protects the company in case of litigation. Certyneo supports you in the dematerialisation of all your HR contracts, in full compliance with eIDAS Regulation and GDPR.

👉 Discover Certyneo pricing and start signing your employment contracts electronically today.