A foreign company hires its first employee in Spain. The offer letter is signed, the start date is set, and the team is ready. Then the social security registration deadline passes unnoticed, the collective agreement applicable to the sector is ignored, and the written contract omits three clauses required under Spanish employment legislation. Within months, the employer faces an inspection, a back-payment demand, and a claim before the labour courts. The scenario is not unusual – and the consequences are avoidable.
Employment contracts in Spain are governed by a layered body of employment legislation, sector-specific collective agreements, and mandatory social security rules. Foreign employers must register employees with the Spanish social security system before or on the first day of work, provide a written contract in most cases, and apply the collective agreement binding their sector. Non-compliance triggers administrative fines, retroactive contributions, and exposure to unfair dismissal claims.
This guide explains the step-by-step requirements for employment contracts in Spain, the documentary checklist every foreign employer needs. The most common errors made by international businesses. Additionally, a decision framework for choosing the right contract type for your situation.
The regulatory setting: what governs employment in Spain
Spanish employment legislation operates on several levels simultaneously. The foundational layer is the Estatuto de los Trabajadores (Workers' Statute), which sets minimum standards for all employment relationships. Above individual contracts sit convenios colectivos (collective agreements), which are sector-wide or company-level instruments negotiated between employer associations and trade unions. These agreements are legally binding on all employers in a given sector, regardless of whether the employer is a member of the negotiating association.
This point surprises many foreign employers. A technology company incorporated as a Sociedad de Responsabilidad Limitada (SL) – the Spanish equivalent of a limited liability company – may assume its employment terms are entirely a matter of private contract. In practice, the applicable collective agreement overrides any contractual provision that falls below its minimum standards. The agreement may set higher minimum wages, longer notice periods for dismissal, or additional leave entitlements that the employer must apply from day one.
The third layer is social security law. Spain operates a contributory system under which both employer and employee make monthly contributions calculated on the employee's gross salary. Registration and contributions are administered through the Tesorería General de la Seguridad Social (General Social Security Treasury). Additionally. The obligation to register arises before or on the employee's first working day. not when the first salary payment is made. Failure to register in time generates surcharges on the unpaid contributions and may expose the employer to inspection proceedings.
For foreign companies without a Spanish entity, the obligation to hire locally often triggers the need to incorporate. The two most common vehicles are the Sociedad Anónima (SA), suited to larger capitalisation structures, and the SL. Choosing between them has implications for governance, liability, and ongoing compliance obligations. Our overview of corporate law matters in Spain provides a structured analysis of entity selection and registration requirements.
The Tribunal Supremo (Supreme Court of Spain) and the labour division of the Audiencia Nacional (National Court) have built a substantial body of case law interpreting ambiguous clauses in employment legislation. Courts consistently hold that the employer bears the burden of proving that a dismissal was based on valid grounds and followed the correct termination procedure. This allocation of the burden shapes how contracts must be drafted from the outset.
Step-by-step process: from offer to registered contract
The following sequence reflects the order in which a foreign employer must complete each step. Reversing or skipping steps creates compliance gaps that are difficult to remedy retroactively.
Step 1 – Confirm entity status and employer identification number. Before any hiring is possible, the employer must hold a Spanish número de identificación de empleador (employer identification number) issued by the social security administration. For a newly incorporated SL or SA, this number is obtained after registration at the Registro Mercantil (Commercial Register) is complete. Foreign companies without a Spanish entity may also hire through a payroll provider or employer-of-record structure, but this creates distinct legal relationships that must be documented separately.
Step 2 – Identify the applicable collective agreement. The relevant agreement is determined by the company's principal economic activity, registered under the CNAE classification code. Identifying the correct agreement is not always straightforward. Some sectors have multiple overlapping agreements at national, regional, and provincial level. The most favourable terms for the employee apply. Foreign employers frequently misidentify the applicable agreement or apply an outdated version – both errors create liability for underpayment of wages and benefits.
Step 3 – Select the contract type. Spanish employment legislation recognises several contract categories. The most significant distinction is between open-ended (indefinido) and fixed-term (temporal) contracts. Since the 2021 and 2022 labour reforms, the conditions for legitimate use of fixed-term contracts have been substantially tightened. A fixed-term contract is now valid only when the work is genuinely temporary – for example, to cover a specific project of defined scope or to replace an absent employee. Using a fixed-term contract to avoid open-ended obligations where the work is structurally permanent is one of the most common errors made by foreign employers. Courts treat such contracts as open-ended, and the employee acquires full dismissal protection from the start.
Step 4 – Draft the written contract. Spanish employment legislation requires a written contract for fixed-term engagements, part-time arrangements, remote work agreements, and several other categories. Although open-ended full-time contracts can technically exist without a written document, every employer must provide a written statement of core employment terms within 10 days of the start date under EU-derived information obligations. In practice, a written contract for every engagement is the only defensible approach. The contract must specify: the parties, the job description, the salary and payment intervals, the working hours, the applicable collective agreement, the workplace location, and the notice period for dismissal.
Step 5 – Register the employee with social security before the first working day. Registration is completed online through the social security administration's employer portal. The system generates a registration confirmation that the employer must retain. The registration must be completed – not merely initiated – before the employee begins work. Same-day registrations made after the employee's shift has started do not satisfy the requirement.
Step 6 – File the contract with the public employment service. Most written employment contracts must be filed with the Servicio Público de Empleo Estatal (State Public Employment Service, SEPE) within 10 days of signature. Filing is electronic. Late filing attracts administrative sanctions, and repeated failures are treated as aggravated non-compliance.
Step 7 – Comply with information and onboarding obligations. The employer must inform the employee of the applicable collective agreement. The risk assessment for the position. Additionally, the data protection policy before or on the first day. In sectors with specific occupational health obligations – construction, manufacturing, healthcare – additional documentation is required. These obligations frequently go unaddressed by foreign employers focused on the core contract.
For a detailed comparison of employment contract obligations in neighbouring jurisdictions. Our guide to employment contracts in Portugal sets out the parallel requirements under Portuguese employment legislation and highlights the key differences for employers operating across the Iberian Peninsula.
Documentary checklist and common errors by foreign employers
The following checklist covers the documents a foreign employer must hold on file for each employee from the date of hire.
- Signed written employment contract, specifying the applicable collective agreement
- Social security registration confirmation for the employee
- SEPE contract filing confirmation
- Signed acknowledgment by the employee of the collective agreement and data protection policy
- Occupational health risk assessment relevant to the role
Several errors appear with notable frequency when foreign employers set up operations in Spain without specialist support.
Error 1 – Treating the employment contract as freely negotiable. International businesses accustomed to common law employment systems often approach Spanish contracts as a negotiation between equal parties. Spanish employment legislation does not work this way. The employer cannot contract below the minimums set by the Workers' Statute or the applicable collective agreement, regardless of what the employee agrees to. A salary below the collective agreement minimum is void, and the employee can claim the difference retroactively for up to one year.
Error 2 – Ignoring probationary period rules. The período de prueba (probationary period) is a defined instrument under employment legislation, not an open-ended discretionary tool. Its maximum length depends on the employee's professional category and is capped by the applicable collective agreement. Employers who extend a probationary period beyond the permitted maximum lose the benefit of simplified termination during that period. Any dismissal after the permitted probationary window must follow the full termination procedure applicable to open-ended contracts.
Error 3 – Drafting restrictive covenants without adequate consideration. Post-termination non-compete clauses are permitted under Spanish employment legislation, but they are only enforceable if the employer pays adequate compensation during the restriction period. The compensation must be agreed in the contract and paid monthly after termination. Clauses inserted without a compensation mechanism are unenforceable, leaving intellectual property and client relationships exposed.
Error 4 – Failing to apply the correct dismissal notice and procedure. The termination procedure in Spain varies depending on whether the dismissal is disciplinary, objective, or collective. Each route has different notice requirements, mandatory documentation, and indemnity calculations. Employers who conflate these routes – for example, by using a disciplinary letter for an economically motivated redundancy – create procedurally defective dismissals that courts treat as unfair, regardless of the underlying justification.
Error 5 – Overlooking remote work documentation. If an employee works remotely for more than 30 percent of their working time over a three-month rolling period. The arrangement must be formalised in a written remote work agreement. This agreement must address equipment provision, expense reimbursement, and working hours in detail. Many foreign employers who allow flexible or hybrid working have never executed this document, creating ongoing non-compliance.
To receive an expert assessment of your employment contracts in Spain and identify any existing compliance gaps, contact us at info@ferrazwhitmore.com.
Cost ranges and decision framework for different business scenarios
The economics of hiring in Spain depend on the contract type, the applicable collective agreement, and the social security contribution rates in force. Employer social security contributions are calculated as a percentage of gross salary and typically represent a substantial addition to the headline wage cost. The combined employer contribution covers retirement, unemployment, common contingencies, and occupational accident insurance, among other items. Employers should budget this contribution as a significant addition to gross payroll when modelling hiring costs.
Legal fees for drafting a compliant employment contract vary depending on complexity. A standard open-ended contract for a managerial role with non-compete and confidentiality provisions starts from a few hundred euros in professional fees. Collective redundancy procedures and senior executive terminations attract higher costs, reflecting the documentation burden and negotiation involved.
The decision framework below helps foreign employers identify the right contract approach for their situation.
Scenario A – Single employee, long-term role, no defined end date. Use an open-ended contract. Do not attempt to characterise the role as temporary to defer employment costs. Courts consistently reclassify such arrangements, and the retroactive exposure – including unfair dismissal indemnities – significantly exceeds any short-term saving.
Scenario B – Project-based engagement with defined deliverables and end date. A fixed-term project contract may apply if the work is genuinely distinct and temporary. Document the project scope, deliverables, and estimated duration in the contract itself. Vague project descriptions are the primary reason these contracts fail on challenge. The employer must also monitor the statutory limits on fixed-term duration. When the fixed-term contract converts to open-ended by operation of law – which occurs automatically once the statutory limits are exceeded – the employer must act promptly to regularise the position.
Scenario C – Replacing an employee on maternity, paternity, or sick leave. A substitution contract is appropriate here. The contract must name the absent employee and state the specific leave being covered. When the absent employee returns, the substitution contract ends automatically. If the absent employee's departure becomes permanent, a new open-ended contract is required. Treating a substitution contract as a general-purpose fixed-term instrument creates the same reclassification risk as Scenario B.
Scenario D – Senior executive or managing director of an SA or SL. The employment status of senior executives in Spain requires careful analysis. A managing director who holds decision-making authority over the company's core business may fall outside the standard employment relationship and into the special regime for senior management (alta dirección). This regime has different notice periods, indemnity rules, and collective agreement interactions. Misclassifying a senior executive as a standard employee – or vice versa – creates significant legal and tax exposure.
Scenario E – Remote employee hired in Spain by a foreign company with no Spanish entity. This is the scenario most frequently mishandled. When a foreign company pays a Spanish resident for work performed in Spain without establishing any local presence, the individual is likely an employee under Spanish law, not an independent contractor. Spanish labour courts and the social security administration apply an economic dependence test and a subordination test to determine employment status. Structuring the relationship as a service contract does not change this analysis if the facts indicate employment. The foreign company may face demands for retroactive social security contributions, tax withholding obligations, and unfair dismissal liability – all without having formally incorporated in Spain.
For a full review of your employment contract structure in Spain, including collective agreement mapping and social security compliance, reach out to our employment law team at info@ferrazwhitmore.com.
Self-assessment checklist before hiring in Spain
This approach to employment contracts in Spain is applicable if the following conditions are met.
- The employer has a valid employer identification number from the Spanish social security administration
- The applicable collective agreement for the sector and region has been identified and obtained
- The contract type matches the genuine nature of the work – open-ended for permanent roles, fixed-term only where strictly justified
- The written contract covers all mandatory content and references the collective agreement by name
- Employee registration with the social security system is completed before the first working day
Before initiating the hiring process, verify the following critical points.
- Does your company have a Spanish entity, or will you be hiring through a payroll provider? The answer determines which registration steps apply.
- Is the role genuinely temporary, or is this a permanent business need dressed as a project? The answer determines the permissible contract type.
- Does the collective agreement for your sector set a minimum salary higher than the national minimum wage? If so, the higher figure applies.
- If the employee will work remotely, have you prepared a compliant remote work agreement?
- If the role is senior executive, have you confirmed whether the standard employment regime or the alta dirección regime applies?
When the situation shifts from a standard hiring process to a contested termination, the matter moves from employment contract compliance into formal dismissal procedure – a procedurally distinct and higher-stakes process. That shift is typically triggered by the employer serving a dismissal letter or the employee challenging the termination before a labour conciliation body. At that point, the quality of the original contract and the completeness of the documentation assembled at hiring become determinative factors in the outcome. Our team provides full-spectrum support on employment law matters in Spain, from initial contract drafting through to dismissal defence and labour litigation.
Frequently asked questions
Q: How long does it take to register an employee with social security in Spain and file the contract with SEPE?
A: Social security registration is completed online and generates a confirmation immediately in most cases – the process itself takes under an hour once the employer has an active employer account. SEPE contract filing must be completed within 10 days of the contract signature date. The filing is also electronic. The practical constraint is preparation time: identifying the correct collective agreement and drafting the compliant contract typically takes one to two weeks when done properly by a lawyer in Spain with employment law expertise.
Q: Is it true that a fixed-term contract automatically becomes open-ended after a certain period?
A: Yes. Following the 2022 labour reforms, the rules on fixed-term contract conversion are strictly applied. A worker employed on successive fixed-term contracts with the same employer, or on a single contract that exceeds the statutory duration limit, is treated as an open-ended employee by operation of law. This conversion is automatic – it does not require a court order. The common misconception is that inserting a termination clause in the fixed-term contract prevents the conversion. It does not. The statutory rule overrides any contractual provision to the contrary.
Q: What are the minimum dismissal notice periods under Spanish law, and can they be extended by contract?
A: Dismissal notice requirements in Spain depend on the category of dismissal. For objective dismissal on economic, technical, organisational, or production grounds, the employer must give 15 days' written notice before the termination date or pay in lieu. Disciplinary dismissal, by contrast, takes effect immediately upon delivery of the dismissal letter, with no notice period. The applicable collective agreement may set longer notice periods, and individual contracts may also extend them further. A common error is assuming that the statutory minimum applies universally – in many sectors, the collective agreement provides substantially longer notice and higher indemnity entitlements.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our employment law practice supports foreign employers entering the Spanish market through every stage of the employment relationship. from initial contract drafting and collective agreement mapping to social security compliance, termination procedures, and labour litigation. We combine Portuguese civil law expertise with English common law tradition, giving international clients a grounded perspective on both Iberian employment systems and their interaction with EU-wide obligations. As a law firm in Spain and Portugal with a dedicated employment practice, we advise technology companies, institutional investors, and multinational groups that need results-oriented counsel across multiple legal systems. To discuss your employment contract obligations in Spain, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.