Permanent vs Fixed-Term Contracts: Legal and Practical Differences in 2026

The choice between a permanent contract (CDI) and a fixed-term contract (CDD) constitutes a major strategic decision for any employer. These two contractual forms, although regulated by the French Labour Code, respond to distinct logics and involve different obligations. Understanding their legal and practical specifics allows HR departments to secure their recruitment and optimise their human resources management policy.

The Permanent Contract: the normal and general form of employment contract

In accordance with Article L1221-2 of the Labour Code, the permanent contract is the normal and general form of the employment relationship. It has no end date and offers the employee maximum job security. The employer commits to an ongoing relationship, which implies strict procedures in case of termination: dismissal for personal or economic reasons, mutual termination agreement, resignation or retirement.

The permanent contract can be concluded on a full-time or part-time basis, and generally begins with a probationary period (2 to 4 months depending on the professional category, renewable once). Its written drafting is not compulsory, except in certain cases (part-time, specific clauses), but it remains highly recommended to secure the employment relationship.

The Fixed-Term Contract: a strictly regulated exception

The fixed-term contract can only be concluded for the performance of a specific and temporary task, in the limited cases set out in Article L1242-2 of the Labour Code:

• Replacement of an absent employee

• Temporary increase in activity

• Seasonal or customary employment

• Assisted contracts (apprenticeship, professional development)

Its maximum duration is generally 18 months, including renewals (up to twice). The contract must be in writing and provided to the employee within 2 working days following hiring, failing which it will be reclassified as a permanent contract (Article L1242-13).

At the end of the fixed-term contract, the employee receives an end-of-contract payment (precarity allowance) equal to 10% of total gross remuneration, except in certain cases (seasonal contracts, refusal of a permanent contract offered on equivalent terms).

Practical differences for the employer

Non-compliance with these rules exposes the employer to civil sanctions (reclassification as a permanent contract, payment of compensation) and criminal penalties (fine up to €3,750, doubled in case of repeat offence).

Choosing the right contract according to needs

The use of fixed-term contracts must always be justified by an objective and temporary reason. In case of doubt, the permanent contract remains the most legally secure solution. Companies favouring abusive fixed-term contracts are exposed to increasing employment disputes, with judges applying a strict interpretation of the authorised cases of use.

HR managers must also anticipate the impact of fixed-term contracts on employer unemployment insurance contributions, which may be adjusted according to the rate of short-term contract terminations (bonus-malus since 2021).