A mobility clause (clause de mobilité) is a contractual provision that allows the employer to impose a change of workplace without that change constituting a modification of the employment contract. It falls within the employer’s management authority and, where validly drafted, is in principle binding on the employee. But the validity of the clause is not enough: its implementation must also comply with the requirements of contractual good faith. An employer who activates a mobility clause in disloyal conditions risks having any dismissal following the employee’s refusal declared without real and serious cause.
1. The mobility clause: definition and legal basis
1.1 – What is a mobility clause?
A mobility clause is a provision inserted in the employment contract that authorises the employer to change the employee’s place of work without that change constituting a modification of the contract requiring the employee’s express agreement. It falls within the employer’s management authority, in the same way as changes to working conditions.
Without a mobility clause, the place of work stated in the contract is a contractual element: its unilateral modification by the employer constitutes a modification of the contract, which the employee is entitled to refuse without committing misconduct. With a valid mobility clause, the transfer falls within the employer’s management authority and is binding on the employee, subject to compliance with the conditions of implementation.
1.2 – Mobility clause and change of workplace: the fundamental distinction
Case law draws a careful distinction between:
- A change in working conditions (relocation within the same geographical area): falling within management authority, it is binding on the employee even without a mobility clause
- A modification of the employment contract (change of workplace outside the geographical area): it requires the employee’s express agreement unless a valid mobility clause provides otherwise
The concept of “geographical area” is assessed in concreto by the courts, taking into account in particular the available means of transport and commuting times.
2. Conditions for a valid mobility clause
2.1 – A precisely defined geographical scope
The mobility clause must define its geographical scope of application in a precise and objective manner. A clause that left the scope to be determined solely by the employer’s will would be void. The Court of Cassation requires that the employee be able to know, from the moment they sign their contract, the exact extent of their mobility obligation.
Important note
A clause worded as follows: “The employee may be transferred to any establishment of the group throughout France” is too broad and will generally be found void for lack of precise delimitation. By contrast, a clause covering “establishments located in the Île-de-France region” or “the following 13 departments:
” is sufficiently precise to be valid.2.2 – Justification by the nature of the duties or the company’s interests
The clause must be justified by the nature of the duties assigned to the employee or by the company’s interests. It cannot be included systematically for all employees regardless of their functions. Roles that naturally involve mobility (travelling sales representatives, maintenance technicians, security staff on contract sites) are more suited to it than sedentary positions.
2.3 – Clear and unequivocal acceptance by the employee
The clause must have been clearly and unequivocally accepted by the employee at the time the contract was concluded. A clause included in the contract and signed by the employee is presumed to have been accepted. However, a clause added unilaterally by amendment without genuine negotiation, in a context of pressure or imbalance, may be challenged.
2.4 – No right of unilateral extension reserved to the employer
The clause cannot reserve to the employer the right to extend its scope unilaterally. Any modification of the clause’s scope constitutes a modification of the contract requiring the employee’s express agreement.
3. Implementation of the mobility clause by the employer
3.1 – The transfer decision: formal requirements
To activate the mobility clause, the employer must notify the employee of the transfer in writing, specifying:
- The new place of work
- The effective date of the transfer
- The reasons justifying the transfer (reorganisation, loss of contract, operational need)
The decision must be taken in the company’s interest and not with the aim of harming the employee or provoking their resignation. An employer who activates a mobility clause for purely vexatious or discriminatory purposes would have that decision annulled.
3.2 – The notice period
Statute does not set a minimum notice period for a transfer based on a mobility clause. However, case law requires a period that is reasonable and proportionate to the distance, the employee’s personal and family circumstances, and the practical constraints of the transfer. A very short notice period (a few days) for a transfer to a location several hundred kilometres away is consistently treated as evidence of disloyal implementation.
3.3 – Support for the transfer
The employer must offer reasonable support for the transfer: reimbursement of removal costs, assistance with rehousing, temporary maintenance of remuneration where transport costs increase, and arrangements for the transition period. A total absence of support, combined with a significant distance, is a factor of disloyalty taken into account by the courts.
4. The requirement of good faith in implementation
4.1 – The principle of contractual good faith
Article 1104 of the Civil Code provides that contracts must be performed in good faith. This principle applies fully to the employment contract and prohibits the employer from exercising contractual prerogatives, including a validly stipulated mobility clause, in a disloyal manner.
The validity of the clause is a necessary but not sufficient condition: even a perfectly drafted clause may give rise to a dismissal without real and serious cause if its implementation is disloyal.
Note: disloyal implementation
The Lyon Court of Appeal found the implementation of a valid mobility clause to be disloyal after an employee was transferred 300 km away with only 7 days’ notice and no support whatsoever. The dismissal for gross misconduct following the employee’s refusal was declared without real and serious cause.
4.2 – Indicators of disloyal implementation identified by the courts
Case law has identified several indicators characterising disloyal implementation of a mobility clause:
- A very short notice period, disproportionate to the distance and the employee’s personal circumstances
- A significant distance between the employee’s home and the new place of work
- A total absence of support: no financial assistance, no rehousing proposal, no transition arrangements
- The employer’s knowledge of the employee’s personal or family situation (children in school, carer responsibilities, medical constraints) without taking it into account
- Refusal of any dialogue in response to the employee’s stated difficulties
- Moving directly to disciplinary proceedings without seeking an alternative solution
4.3 – Checklist before activating a mobility clause
Before any transfer notification, the employer should verify:
- Is the clause drafted with a precisely delimited geographical scope?
- Is the transfer justified by a legitimate and documented ground?
- Is the notice period reasonable in light of the distance and the employee’s circumstances?
- Has the employee’s family situation been taken into account?
- Has concrete support been offered?
- Have the difficulties raised by the employee received a substantive response before any disciplinary proceedings?
5. The employee’s refusal: consequences and rights
5.1 – Refusal where the clause is validly implemented
Where the mobility clause is valid and its implementation is carried out in good faith, the employee’s refusal to carry out the transfer constitutes in principle misconduct that may justify dismissal. The classification of the misconduct (minor, serious or gross) depends on the circumstances and the employee’s conduct.
5.2 – Refusal where implementation is disloyal
Where implementation of the clause is disloyal, the employee’s refusal does not constitute misconduct. The employee may refuse the transfer without that refusal justifying a dismissal. If the employer nonetheless dismisses for gross misconduct, that dismissal will be declared without real and serious cause by the labour tribunal.
5.3 – Specific protections
Certain employees benefit from specific protections against transfers:
- Protected employees (trade union delegates, CSE members): a transfer may only take place with their agreement or following authorisation from the labour inspector
- Pregnant employees: any discriminatory transfer connected to the pregnancy is void
- Employees who have suffered a workplace accident or occupational illness: specific protections apply during the period of suspension of the contract
Key point
An employee facing a transfer they consider disloyal should carefully document the evidence of disloyalty: notice period, distance, family situation, absence of support, exchanges with the employer. These elements will be decisive in the event of labour tribunal proceedings.
6. Challenging a transfer based on a mobility clause
6.1 – Challenging the validity of the clause
The employee may first challenge the validity of the clause itself before the labour tribunal: imprecise scope, absence of justification by the nature of the duties, clause imposed without genuine acceptance. If the clause is declared void, the transfer constitutes a modification of the contract that the employee was entitled to refuse.
6.2 – Challenging disloyal implementation
Even where the clause is valid, the employee may challenge the disloyalty of its implementation. They will need to demonstrate that the concrete conditions of the transfer (notice period, distance, absence of support, disregard for their personal circumstances) characterise a breach of the employer’s contractual good faith obligation.
6.3 – Time limit for bringing a challenge
A claim challenging a dismissal following a refusal to transfer is subject to a 12-month limitation period running from notification of the dismissal (Art. L. 1471-1 of the Labour Code). This deadline is short: it is advisable to consult a lawyer promptly following notification of the dismissal.
7. Frequently asked questions about the mobility clause
No. The mobility clause must have been accepted by the employee at the time the employment contract was concluded. However, once the clause has been validly stipulated, its activation by the employer (the transfer decision itself) does not require the employee’s fresh agreement: it falls within management authority. This is the key distinction between the inclusion of the clause in the contract, which requires the employee’s agreement, and its implementation, which is binding on the employee within the limits of contractual good faith.
Yes, in two cases. First, if the mobility clause is invalid: the employee may refuse without committing misconduct, as the transfer constitutes a modification of the contract they are free to reject. Second, if the implementation of the clause is disloyal: the refusal is not misconduct and any dismissal in that context will be without real and serious cause. This was confirmed by the Lyon Court of Appeal in its ruling of 3 December 2025 (n° 21/02646).
Statute sets no minimum notice period for a transfer based on a mobility clause. However, case law requires a reasonable period, proportionate to the distance and the employee’s personal and family circumstances. A notice period of 7 days for a transfer 300 km away was found insufficient and constitutive of disloyalty by the Lyon Court of Appeal (ruling of 3 December 2025). The applicable collective agreement may also provide for minimum notice periods.
Family circumstances do not automatically block a transfer, but the employer is required to take them into account in the practical arrangements. Deliberately ignoring significant family constraints (children in school, employed spouse, carer responsibilities) without offering support or an alternative solution is a strong indicator of disloyalty taken into account by the courts. The more significant and well-known the family constraints, the higher the support requirements.
A challenge may target the validity of the clause itself (imprecise scope, absence of justification, clause imposed without genuine acceptance) or the disloyalty of its implementation (insufficient notice, absence of support, disregard for personal circumstances). In both cases, the labour tribunal claim must be brought within 12 months of notification of the dismissal. Prior consultation with an employment lawyer allows the prospects of success to be assessed and the necessary evidence to be prepared.
Your employment lawyer for a mobility clause
A mobility clause is a powerful management tool, but its handling is technically demanding: validity of the drafting, good faith in implementation, consideration of the employee’s personal circumstances, support for the transfer. For the employer, poorly prepared activation can turn a legitimate transfer into a dismissal without real and serious cause. For the employee, knowing their rights allows them to respond to a disloyal transfer rather than simply accept it.
As specialists in employment law based in Paris 1st, Patchwork Avocats assists companies in securing their mobility clauses and transfer procedures, and defends employees facing transfers carried out in disloyal conditions.
