How PEO and Co-Employment Models Work in Spain, When They Create Legal Risk and Which Compliant Hiring Alternatives Are Available
Lawants Guide · PEO in Spain A Professional Employer Organization is often proposed as a fast way to hire in Spain without setting up a local entity. The model relies on co-employment: the provider and your company are presented as sharing the employer role, with the provider handling payroll, tax and Social Security while your company directs the work.
Spain treats this division differently from many other jurisdictions, and the outcome depends on how the relationship actually operates, not on the PEO agreement itself. This guide walks through how Spanish authorities assess that reality, when it can create risk for both companies, and which structures, including direct foreign employer registration, let a foreign company hire without that risk.
What Is a PEO and How Does It Work?
A Professional Employer Organization (PEO) is a service model built around co-employment: the PEO and the client company are both presented as employers, with employment responsibilities contractually divided between them. The PEO typically handles payroll, tax withholding, benefits administration and regulatory filings, while the client company continues to select the worker, assign tasks and manage performance.
This differs from an Employer of Record (EOR), where the provider is named as the sole legal employer rather than as a co-employer. The comparison below sets out how PEO, EOR and payroll outsourcing actually differ, and the sections that follow explain what determines whether any of them holds up under Spanish law.
Common Services Marketed by PEO Providers
PEO providers typically combine administrative functions that a foreign company would otherwise need to coordinate separately. These may include:
- Spanish payroll and payslip preparation
- IRPF withholding and Social Security reporting
- benefits administration
- employment documentation and HR compliance
- onboarding and offboarding support
- employment contracts and internal policies
The appeal of the PEO model lies in its promise to reduce administrative burden while providing expertise in complex employment matters. For companies considering international expansion, PEOs present themselves as a turnkey solution to navigate unfamiliar regulatory landscapes without establishing a local entity.
Whether that promise holds in Spain depends entirely on the structure examined below.
Define the Legal Employer Before Selecting a PEO Provider
Lawants determines which company should legally employ and direct the worker, then compares the proposed PEO with direct foreign employer registration, payroll outsourcing and a Spanish entity. Employment, tax, Social Security and immigration are assessed together before payroll or registrations begin.
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PEO vs. EOR vs. Payroll Outsourcing: What’s the Difference?
PEO, EOR and payroll outsourcing are often used interchangeably by providers, despite representing different legal arrangements. The comparison below sets out where they actually differ.
| Aspect | PEO | EOR | Payroll Outsourcing |
|---|---|---|---|
| Who is the formal employer | Client company, with the provider presented as co-employer | Provider | Client company |
| Who directs the work | Client company | Often the client company | Client company |
| Spanish subsidiary required | Not necessarily. The client must be able to employ in Spain through a local entity or direct foreign employer registration. | No | No, if the foreign company registers directly as employer |
| Recognised under Spanish law | Not as a distinct category | Not as a distinct category | Lawful when the provider performs administrative functions without becoming the employer |
| Typical risk in Spain | The co-employment label does not establish a lawful division of employer status | May amount to illegal worker supply if the provider does not genuinely perform the employer role | Low, provided the client remains the real and formal employer |
Replacing a PEO with an EOR Does Not Automatically Resolve the Risk
An EOR removes the contractual co-employment label, because the provider is named as the sole legal employer. It does not, however, resolve the underlying question of which company exercises the employer powers in practice.
If the foreign company continues to select, direct and supervise the worker, the arrangement may raise the same Article 43 concerns discussed below.
The EOR structure must be assessed on its actual operation, not presented as an automatically compliant alternative to a PEO.
Is a PEO Legal in Spain?
A service marketed as a PEO is not automatically unlawful in Spain. Payroll, HR administration and compliance can be outsourced legitimately. What Spanish law does not recognise is the PEO co-employment label as an autonomous basis for dividing the employer role between two companies.
Payroll and HR Outsourcing Can Be Lawful
When the client company remains the genuine employer, directing the work and bearing the employment risk, and a provider simply calculates payroll, administers benefits and handles filings on that employer’s behalf, that is a legitimate administrative service. The provider does not enter the employment relationship or present itself as employer.
The typical PEO model goes further than this: it presents two companies as sharing the employer role by contract. Spanish law does not provide an autonomous basis for that division. The question, then, is how the authorities decide which company the worker actually answers to.
How Spanish Authorities Identify the Real Employer
Spanish labour authorities do not stop at the wording of the PEO agreement. They examine how the relationship operates in practice, checking:
- who selected the worker and agreed the remuneration;
- who assigns and supervises the work;
- who controls working time, leave and absences;
- who evaluates performance;
- who exercises disciplinary and termination powers;
- whose organisation the worker is integrated into;
- which company bears the employment and business risk.
If these functions remain with the client while the provider is presented as sharing or assuming employer status, the contractual structure and operational reality diverge. That is where the Article 43 analysis becomes relevant.
When a PEO May Amount to Illegal Worker Supply in Spain
Article 43 of the Workers’ Statute reserves the temporary supply of workers to authorised temporary employment agencies, known as Empresas de Trabajo Temporal or ETTs, under Ley 14/1994. Outside that regulated channel, where the provider is presented as employer or co-employer but performs little beyond payroll and administration, while the client retains the employer functions identified above, the arrangement may amount to illegal worker supply (cesión ilegal de trabajadores).
This is a structural risk built into the typical PEO model, not a technicality that depends on how the arrangement is labelled. Framing the agreement as consultancy or administrative support does not change the outcome of the test above. Spanish authorities look at the real employer, not the contractual label, and that principle is what the rest of this guide is built around.
Use a Hiring Structure That Spanish Law Recognises
Lawants identifies where the employer powers will actually sit and converts the planned hire into a legally and fiscally coherent structure. Depending on the facts, we implement direct foreign employer registration, a Spanish entity or lawful payroll outsourcing, then coordinate contracts, Social Security, payroll and ongoing compliance.
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What Are the Risks of Using a PEO in Spain?
Where the test above points to illegal worker supply, the consequences are concrete, and they fall on both companies, not only the provider.
Illegal Worker Supply Can Trigger Joint Liability, Back-Payments and Sanctions
Where Article 43 applies, both the PEO and the client company can be held jointly and severally liable for salary and Social Security obligations (art. 43.3 ET). The worker may elect to acquire permanent employee status with either company (art. 43.4 ET). The infringement is classified as very serious under Article 8.2 LISOS, with administrative sanctions that, under the general bands set by Article 40 LISOS, range from approximately €7,501 to €225,018 depending on the degree applied, not a fixed amount per worker.
Any unpaid Social Security contributions may be recovered from the responsible companies, together with the applicable surcharges and interest under Articles 30 and 31 LGSS. Reclassification may also produce retroactive consequences for both companies and for the worker’s employment status.
A PEO Agreement Cannot Transfer Statutory Liability
A service agreement may allocate costs and indemnities between the provider and the client. It cannot prevent Spanish authorities or the worker from pursuing the foreign company where statutory liability applies. Any contractual recovery against the provider takes place separately, and usually after the company has already faced the employment or Social Security claim.
A PEO Does Not Resolve Immigration Status
A PEO agreement does not itself provide the right to work in Spain. Immigration status must correspond to the real employment or assignment structure, and it must remain consistent with the Social Security and contractual documentation.
Neither a PEO nor an EOR Removes Permanent Establishment Risk
Using a PEO or an EOR does not remove the risk that the foreign company’s activities in Spain create a permanent establishment. Under Article 13 TRLIRNR and Article 5 of the applicable tax treaty, the analysis considers whether the foreign company has a place of business available to it in Spain, what activities the worker performs, and whether the worker concludes or negotiates contracts on the company’s behalf.
If a permanent establishment exists, the profits attributable to it may become subject to Spanish corporate taxation. A PEO or EOR can change the name appearing on the employment contract. It does not remove the activities performed in Spain for the foreign company.
How to Hire in Spain Legally: Compliant Alternatives to a PEO
Spanish law provides several compliant ways to employ people, assign existing employees or obtain services in Spain. The appropriate route depends on the activity planned:
| Planned Activity in Spain | Route Normally Assessed First |
|---|---|
| One or more permanent hires directed by the foreign company | Direct foreign employer registration |
| Existing employee temporarily assigned to Spain | Posting, Social Security and immigration analysis |
| Genuine temporary staffing requirement | Authorised ETT |
| Defined function outsourced to an autonomous provider | Genuine service outsourcing |
| Several hires or lasting commercial activity | Spanish subsidiary or branch |
The two routes below cover the situations most foreign companies face first.
Direct Foreign Employer Registration
A foreign company can often register directly as an employer in Spain and remain the genuine employer throughout, without a co-employment structure or a third-party intermediary. This process involves several key steps:
- Registration with Spanish authorities: the company registers with the Spanish Social Security Treasury (TGSS) to obtain an employer identification number (CCC), and with the tax authorities (AEAT) to obtain a fiscal identification number (NIF) for non-residents.
- A compliant employment contract: drafted under the applicable collective bargaining agreement, covering working hours, paid leave and termination conditions.
- Social Security and tax compliance: as the direct employer, the company makes the mandatory Social Security contributions, withholds and remits employee income tax, and completes the required reporting.
- Local payroll management: calculating Spanish withholdings, generating legally required payslips, and managing recurring payments.
This route does not, by itself, create a Spanish subsidiary, and it does not automatically resolve the separate permanent establishment or immigration questions, which still need their own assessment.
Spanish Subsidiary or Branch
A Spanish branch or subsidiary fits sustained Spanish activity with several hires, commercial activities beyond employment such as sales or local contracting, a longer-term market commitment, or industry-specific requirements that call for a formal legal presence. The choice depends on governance, liability and tax considerations, not on a fixed headcount.
Where the chosen route creates a Spanish employment relationship, the applicable collective bargaining agreement, salary structure and statutory entitlements must still be implemented correctly. What changes is who is responsible for getting them right, and who Spanish authorities can hold liable if something is wrong.
How Lawants Helps You Hire in Spain Compliantly
A PEO can simplify administration, but it cannot decide on its own whether the resulting structure is lawful in Spain: that depends on who actually exercises the employer’s functions, as set out above. In many cases, a foreign company does not need a PEO, an EOR or even a Spanish subsidiary at all.
It can register directly as the employer and keep that question settled from the start.
Lawants determines which structure the facts support before payroll or employer registrations begin: direct foreign employer registration, a Spanish subsidiary or branch, or another route. The assessment considers employment law, taxation, Social Security, immigration and permanent establishment together.
Once the structure is defined, the same team obtains the required tax and Social Security registrations, prepares the Spanish employment contract, registers the employee, runs payroll and manages the recurring filings.
Build the Right Spanish Employment Structure from the Start
The assessment identifies the route that best fits your company’s activity and plans in Spain. If the project proceeds, the same Lawants team implements the structure and manages registration, contracts, payroll and recurring compliance as the business develops.
PEO in Spain: Frequently Asked Questions
These answers address the questions that most often come up once a PEO proposal is compared against the way Spanish employment law actually works.
Is a PEO Legal in Spain?
Not as an autonomous basis for dividing the employer role between two companies. Payroll and HR administration can be outsourced legitimately, but the PEO co-employment label does not itself decide who the employer is. Where the client company continues to direct the worker while the PEO is named as employer, the arrangement can amount to illegal worker supply under Article 43 of the Workers’ Statute.
What Does PEO Stand for in Spain?
PEO stands for Professional Employer Organization. In Spain, the term describes a commercial service model rather than a legal category: it is not defined or authorised under Spanish employment law.
What Is the Main Downside of Using a PEO in Spain?
The main downside is that the co-employment structure has no autonomous legal basis in Spain. If the client directs the worker while the provider is presented as sharing or assuming employer status, the arrangement may be reclassified as illegal worker supply, with joint liability for both companies.
What Is the Difference Between a PEO and an EOR in Spain?
A PEO relies on co-employment, with the client and the provider both presented as employer. An EOR is a single provider named as the sole legal employer. Spain does not recognise either as a separate legal category, so both are assessed on the same question: which company genuinely exercises the employer’s functions in practice.
Can a Foreign Company Hire in Spain Without a Local Entity?
Yes. In many cases, a foreign company can register directly as an employer in Spain, without a co-employment structure, without an EOR, and without incorporating a Spanish subsidiary. The Spanish Social Security Treasury’s own registration procedure confirms this route for foreign companies without a place of business in Spain, provided a resident representative is appointed.
What Happens if a PEO Arrangement Is Reclassified as Illegal Worker Supply?
Both companies can be held jointly and severally liable for salary and Social Security obligations, the worker may elect to acquire permanent employee status with either company, and the infringement is classified as very serious under Article 8.2 LISOS, with sanctions generally ranging from €7,501 to €225,018 depending on the degree applied.
Does a PEO or EOR Remove the Risk of a Permanent Establishment?
No. Permanent establishment depends on the activities actually carried out in Spain, not on the hiring structure used. A PEO or EOR can change the name on the employment contract without changing the activities performed in Spain for the foreign company.
