Short answer
Under Directive 2001/23/EC, employees are protected when a business or part of one transfers to another employer and the economic entity retains its identity. A share sale normally leaves the employer unchanged. A business sale, merger, outsourcing or insourcing can qualify if an organised operation—not merely the same activity—passes to a new operator.
Courts make an overall assessment. They consider the activity's type, essential assets, workforce, customers, similarity before and after, and any interruption. Assets carry more weight in an asset-dependent operation; taking over a major part of the skilled workforce may be decisive in a labour-intensive service.
If the Directive applies, existing employment rights and obligations transfer automatically. The transfer itself is not a lawful dismissal reason, collective terms receive defined protection, and employee representation may continue. Economic, technical or organisational dismissals are not absolutely barred. National implementing law may offer greater protection and determines important details, so the relevant Member State and transfer date must be checked.
The first question is whether an economic entity transfers
Article 1 of Directive 2001/23 defines the protected transaction as a transfer to another employer of an economic entity that retains its identity—an organised grouping of resources pursuing an economic activity, whether central or ancillary.
An asset-sale document is not enough if no operational entity continues. Conversely, a direct contract between operators is unnecessary: replacing a provider or bringing work in-house may still transfer an entity.
The court must identify the entity before asking whether it retained identity. It might be a factory, route, cleaning team or functionally organised business unit. A loose activity description is not itself an entity.
The identity test weighs all relevant facts
Case 24/85, Spijkers, established the familiar multifactor assessment. Relevant circumstances include:
- the type of undertaking or business;
- transfer of buildings, equipment and other tangible assets;
- value and transfer of intangible assets, know-how or goodwill;
- whether a major part of the workforce is taken over;
- transfer of customers;
- similarity of activities before and after; and
- the duration of any interruption.
Those circumstances “are merely single factors in the overall assessment which must be made and cannot therefore be considered in isolation”. —
Their weight depends on what gives the operation its identity. Machinery or vehicles may be indispensable in an asset-heavy operation; people may be the core resource in a service based on an organised skilled team. Continuing the same activity is relevant but not decisive.
Outsourcing and a new contractor do not decide the issue
Case C-13/95, Süzen, concerned a service contract lost to a competitor. The Court rejected a rule that identical work alone equals a transfer:
“The mere loss of a service contract to a competitor cannot therefore by itself indicate the existence of a transfer”. —
For an activity relying on significant assets, failure to transfer those assets may show that identity did not pass. For a labour-intensive activity, the entity can retain identity if the new employer takes over a major part of the predecessor's specially assigned workforce in terms of numbers and skills.
The parties cannot determine Directive coverage merely by calling the arrangement a “new contract”. Nor does continuing the same cleaning, catering or guarding task compel a finding of transfer.
Case C-463/09, CLECE, illustrates insourcing. A municipality ended outsourced school cleaning and performed it with newly hired staff. It took over neither the contractor's workforce nor tangible or intangible assets. In that labour-intensive context, the Court held that the Directive did not apply. The fact that the municipality performed substantially the same cleaning activity was insufficient because the organised entity had not retained identity.
What happens to employment contracts?
Where a qualifying transfer occurs, Article 3 states:
“The transferor's rights and obligations arising from a contract of employment or from an employment relationship existing on the date of a transfer shall, by reason of such transfer, be transferred to the transferee.” —
The protection is automatic; it is not dependent on the buyer correctly listing every obligation. Failure by the transferor to notify the transferee does not extinguish employee rights. Member States may provide joint transferor/transferee liability.
That automatic transfer also covers unpaid salary obligations. In Case C-216/25, the Court held that national debtor-substitution rules cannot make their transfer depend on the employee's consent. Nor can a supposedly more favourable national rule under Article 8 undermine the minimum protection and coherence of Article 3(1).
Which people belong to the transferring entity is a separate factual question. National law defines employee status, while EU law prevents exclusion from protection merely because a contract is part-time, fixed-duration or temporary-agency employment where national law recognises the relationship.
Employees are generally entitled to continuity of accrued contractual rights, service and applicable terms. The Directive does not create a permanent freeze on every condition: later lawful changes remain governed by national contract law, collective bargaining and the Directive's protective purpose.
Dismissal and detrimental changes
Article 4 provides that the transfer “shall not in itself constitute grounds for dismissal” by either employer. It does not prevent dismissals for economic, technical or organisational reasons entailing changes in the workforce, subject to national law.
The reason and timing therefore matter. Selecting people for dismissal because their contracts would otherwise transfer is very different from a documented post-transfer reorganisation with a genuine operational reason. Other EU and national consultation or redundancy rules may apply in parallel.
If the employment relationship ends because the transfer causes a substantial detrimental change in working conditions, the employer is treated as responsible for termination. Whether changed location, hours, duties or pay cross that threshold is determined under applicable national law consistent with the Directive.
The insolvency exception is limited
Article 5 permits Member States to disapply or modify the ordinary transfer protections for specified insolvency proceedings. The exception is not triggered merely because the transferor is financially distressed. The proceedings must be instituted with a view to liquidation, supervised by a competent public authority and protected against abuse.
Case C-431/23 confirmed that the exception can cover a transfer prepared during judicial restructuring but implemented after a later insolvency, provided the insolvency proceedings genuinely pursue liquidation, remain under the required public supervision and are not used abusively. The national implementing rules and the proceedings' actual purpose therefore require close review.
Collective agreements and representation
The transferee must continue collective-agreement terms on the same basis as the transferor until that agreement terminates or expires, or another agreement enters into force or applies. Member States may limit this preservation period, but not below one year. The Directive contains a specific exception for certain supplementary pension benefits, while requiring measures to protect acquired and prospective interests.
Joined Cases C-680/15 and C-681/15, Asklepios, concerned individual contractual clauses referring dynamically to future collective agreements. The Court permitted continued dynamic effect where national law also allowed the transferee to make consensual and unilateral adjustments. That balance prevented the transferee's freedom to conduct a business from being locked indefinitely without adjustment mechanisms.
Where the transferred entity preserves autonomy, the status and function of employee representatives are preserved under Article 6 if the legal conditions remain satisfied. If it loses autonomy, Member States must ensure appropriate reappointment or reconstitution of representation. Transferor and transferee also owe advance information duties and, where measures are envisaged, timely consultation aimed at agreement.
When one contract is split among several providers
A procurement may divide one operation by site, lot or task among multiple transferees. Case C-344/18, ISS Facility Services, rejected both an automatic all-to-one solution and automatic loss of rights. The Court held that employment rights and obligations can transfer to each transferee in proportion to the tasks performed, if such division is possible and does not worsen the worker's rights.
The national court examines working time, location, scheduling, supervision and whether divided contracts can function. If division is impossible or harms rights, the transferees are treated as responsible for the resulting termination.
A transaction checklist
- Define the organised economic entity before and after the transaction.
- Identify what supplies its identity: assets, licences, systems, workforce, organisation, customer links or know-how.
- Map which assets and staff move, including skills and employee assignment over time.
- Compare activities, customers, management and interruption before and after.
- Do not treat a procurement label, asset clause or refusal to hire as conclusive.
- Identify every employee attached to the entity and all contractual obligations.
- Audit collective agreements, pension exclusions, representatives and information/consultation deadlines.
- Record the actual reason for any dismissal or proposed detrimental change.
- For divided awards, model whether proportional employment can work without reducing rights.
- Apply the relevant Member State's implementing law and any more favourable protection.
Conclusion
Employee protection follows the transfer of an economic entity retaining identity, not every commercial change or every continuation of a task. Courts weigh the resources that make the operation function. Assets may dominate one activity and an organised workforce another, which is why outsourcing and insourcing require a fact-specific analysis.
Once a qualifying transfer occurs, existing employment obligations move to the new employer, transfer-driven dismissal is prohibited, and collective and representative rights receive continued protection. Restructuring remains possible, but it must be justified and carried out under the Directive and applicable national law rather than by contracting around the transfer.
Sources
This article provides general legal information, not advice for a specific matter. Laws, facts and procedural deadlines may change the result. Follow the linked primary sources and obtain local advice before acting.