Employment Contracts in Spain: The Estatuto de los Trabajadores, Social Security & Dismissal

Whether you’re signing your first hire in Madrid or setting up a Dubai entity to employ a regional team, understanding employment contracts in Spain is the starting point for getting hiring, payroll and dismissal right. This guide covers the Spanish framework end-to-end — the Estatuto de los Trabajadores, indefinite and temporary contracts after the 2022 reform, collective agreements, Social Security, working time, severance and the fair/unfair/void dismissal regime — then bridges into UAE hiring, where payroll, WPS and GPSSA compliance replace the Spanish rulebook entirely.

What is an employment contract in Spain?

An employment contract in Spain (contrato de trabajo) is the agreement governing the working relationship, sitting under a strongly protective framework: the Estatuto de los Trabajadores (Workers’ Statute) sets the statutory floor, binding collective bargaining agreements (convenios colectivos) add sector- and often region-specific terms, and the Social Security system underpins the whole relationship. Spanish labour law is robustly pro-employee.

The relationship is documented through a contract, and before the employee starts the employer must register them with Social Security (alta) and report the hiring to the public employment service. On top of the contract, employers must pay substantial employer Social Security contributions, withhold IRPF (personal income tax) and the employee’s own contributions, and comply with the applicable collective agreement.

Spain therefore combines contractual freedom with a firm statutory floor, a powerful collective-agreement layer and strong dismissal protection, and there is no at-will employment. This is a different world from US-style hiring — and, in its reliance on a mandatory framework, closer to the UAE. The key contrast is that the UAE contract is standardised and government-registered, with one clean federal set of entitlements, no heavy Social Security burden, and no fair/unfair/void dismissal classification.

Is a written employment contract required in Spain?

For many contract types, yes — and even where an oral contract is technically possible, either party can demand it be put in writing, and the employer must always register the employee with Social Security before they start.

Temporary, part-time, training and several other contract types must be in writing, and failing to register an employee with Social Security or to put a required contract in writing carries penalties and can affect the contract’s classification [VERIFY current rules]. A contract can never provide less than the Estatuto or the applicable convenio colectivo. This is the same discipline the UAE enforces: there the registered contract must be in place before the work permit and WPS payroll can operate.

Indefinite vs temporary contracts after the 2022 reform

The single most important change in recent Spanish labour law is the 2022 labour reform (reforma laboral), which made the indefinite contract the clear default and sharply restricted temporary contracts.

Since the reform, a temporary contract is only lawful for specific justified reasons — broadly, genuine production peaks or covering an absent employee — and the old open-ended use of “works and services” contracts was abolished; misuse converts the contract to indefinite by operation of law, and seasonal or intermittent needs are channelled into the fijo-discontinuo (permanent-seasonal) contract [VERIFY current categories]. This makes Spain far less temporary-contract-friendly than before. The UAE, by contrast, uses renewable fixed-term contracts under Federal Decree-Law No. 33 of 2021 as the standard form, without Spain’s justified-cause requirement or automatic conversion.

Collective agreements: the hidden rulebook in Spain

A defining feature of Spanish employment is the convenio colectivo — a sector, regional or company collective agreement that is legally binding and often dictates pay scales, working hours, classifications, supplements and more.

Whichever convenio applies to the employer’s activity and location sets minimum terms above the statutory floor: minimum salary tables by professional category, the working-week length, overtime treatment, leave, and often severance enhancements [VERIFY]. An employer cannot simply contract below the applicable convenio, and identifying the correct one is a compliance step in itself.

Because the convenio can override the individual contract in the employee’s favour, drafting must start by identifying it — a real complexity that leads many international groups to consolidate a regional team in a simpler jurisdiction such as the UAE and let a local partner run payroll, accounting and tax under one clear statute, with no sector-agreement layer to reconcile.

What must a Spanish employment contract include?

A Spanish contract should set out the commercial terms while respecting the Estatuto and the applicable convenio. Standard and often-required content includes:

Pay must respect both the national minimum wage (SMI) and the higher convenio salary tables, annual leave is a minimum of 30 calendar days, and Spanish employees are typically entitled to extra salary payments (pagas extraordinarias) — commonly two per year — unless prorated [VERIFY current SMI and rules]. Because the convenio and statute set overlapping floors and payroll is intricate, many international employers centralise regional headcount in the UAE and run payroll and WPS under a single, simpler framework.

How does the probation period work in Spain?

Probation (período de prueba) in Spain must be agreed in writing and is capped by the Estatuto and the applicable convenio — it is not an at-will window.

During a valid probation period either party can terminate without severance and generally without cause, but the period must be written into the contract, must respect the statutory or convenio maximum for the role, and cannot be re-used if the worker has already done the same job at the company [VERIFY current limits]. Outside probation, full dismissal protection applies. This mirrors the UAE, where probation can run up to six months under the Labour Law, but termination still follows a defined process rather than free dismissal.

How much are Social Security contributions in Spain?

Spanish Social Security (Seguridad Social) is a major employment cost and a defining feature of the system. Both employer and employee contribute on the employee’s contribution base, but the employer pays by far the larger share.

Employer contributions bundle several components — common contingencies, unemployment, the FOGASA wage-guarantee fund, vocational training and activity-based accident cover — while the employee’s smaller share is withheld from pay along with IRPF income tax [VERIFY current percentages]. The practical effect is that the employer’s total cost sits well above gross salary. None of this exists in the UAE, where wages are simply transferred through the Wage Protection System, with pension contributions (via GPSSA) only for UAE and GCC nationals.

Working time, pay and the extra payments in Spain

Spain regulates working time firmly, and adds features unfamiliar to many foreign employers — notably the extra salary payments and mandatory time recording.

Ordinary working time is capped (commonly around 40 hours per week averaged annually, subject to the convenio, with reform to reduce the maximum under discussion), employees are entitled to at least 30 calendar days’ paid annual leave, and most are entitled to two extra payments a year unless the contract prorates them across twelve months [VERIFY current limits and any reduction]. Employers must also keep a daily record of working hours for every employee. The UAE has none of these specific features — one Labour Law, no pagas extra, and gratuity rather than a convenio-driven structure.

Dismissal and severance in Spain: fair, unfair or void

Dismissal in Spain must have a valid legal cause and follow the correct procedure, and it is then classified as fair (procedente), unfair (improcedente) or void (nulo) — each with very different consequences.

For an objective dismissal (e.g. economic or organisational grounds), statutory severance is generally 20 days’ salary per year of service, capped at 12 monthly payments; for an unfair dismissal, it is generally 33 days’ salary per year of service, capped at 24 monthly payments (with higher accrual for pre-2012 service under transitional rules), and the employer usually chooses between paying that or reinstating; a void dismissal forces reinstatement with back pay [VERIFY current formulas and caps]. Collective redundancies (ERE) have their own consultation procedure. Contrast this with the UAE, where termination follows Federal Decree-Law No. 33 of 2021 and the payout is end-of-service gratuity based on basic salary and tenure — a cleaner, more predictable calculation without a fair/unfair/void classification.

Are non-compete and confidentiality clauses enforceable in Spain?

Confidentiality clauses are enforceable in Spain. A post-contractual non-compete is enforceable only if the employer pays adequate financial compensation and strict conditions are met.

Under the Estatuto, a post-contractual non-compete is valid only where the employer has an effective industrial or commercial interest, the employee receives adequate financial compensation, and the duration does not exceed two years for technical staff or six months for others [VERIFY current limits]. Without the compensation, the clause does not bind the employee. There are also rules on exclusivity and permanence bonuses. As with every country in this series, restrictive covenants are jurisdiction-specific and cannot be copied blindly — the same is true when drafting UAE contracts.

Spain vs UAE: how does hiring compare?

Spain and the UAE both require written frameworks and reject at-will dismissal, but Spain layers on heavy Social Security, binding collective agreements, extra salary payments and a fair/unfair/void dismissal regime. The UAE is registered-contract, WPS-driven and free of personal income tax.

Hiring in the UAE: WPS, GPSSA and contracts explained

When you hire in the UAE, the framework is far lighter than Spain’s: a mandatory registered employment contract, salary payment through WPS, and GPSSA pension contributions for UAE and GCC nationals only. There is no personal income tax, so the employee’s gross salary is what they keep, subject only to any agreed deductions.

Private-sector employment is governed by Federal Decree-Law No. 33 of 2021 and its executive regulations. Contracts are fixed-term (renewable), probation can run up to six months, and on termination employees are entitled to end-of-service gratuity calculated on basic salary and length of service [VERIFY exact accrual bands]. There is no heavy Social Security burden, no binding convenio layer and no fair/unfair/void dismissal classification.

The Wage Protection System (WPS), monitored by MoHRE, requires employers to pay staff electronically through approved channels so wages are traceable and timely. Late or non-payment can trigger fines and suspension of new work permits [VERIFY current penalties]. For UAE and GCC nationals, employers must also register with the General Pension and Social Security Authority (GPSSA) and remit pension contributions — expat staff are outside GPSSA. Getting these moving parts right from the first payroll run is exactly what Fastlane’s payroll and WPS service is built for.

What does compliant UAE payroll cost?

Running compliant UAE payroll has two cost layers: the employee cost (salary, gratuity accrual, and GPSSA for nationals) and the compliance cost (payroll processing, WPS, and the tax registrations your new entity needs). Unlike Spain, there is no heavy employer Social Security burden on expatriate staff and no income tax to withhold on salaries.

Here’s a simple worked example for one expat employee on a mainland setup:

On the compliance side, Fastlane sets up and runs payroll and WPS as a managed service, and handles the tax registrations that come with employing people through a UAE entity:

For context, a UAE entity only enters Corporate Tax at 9% on profits above AED 375,000, and registers for VAT once taxable supplies pass AED 375,000 (mandatory) or AED 187,500 (voluntary). Salaries themselves are never taxed — the cost of employing in the UAE is genuinely the salary plus gratuity plus light compliance, which is what makes it attractive for regional headcount versus a high-contribution jurisdiction like Spain.

Common cross-border hiring mistakes to avoid

Companies moving between Spain and the UAE make the same avoidable errors. Most come from assuming one country’s rules travel with the employee. The costly ones:

1. Copy-pasting a Spanish contract into the UAE. Convenio, Social Security and fair/unfair/void dismissal clauses have no meaning under UAE law; the contract must follow Federal Decree-Law No. 33 of 2021 and be registered.
2. Paying UAE salaries outside WPS. Even one off-system payment can breach WPS and put future work permits at risk.
3. Missing GPSSA for national hires. Employers must register and contribute for UAE/GCC nationals — a step Spain-based teams routinely overlook.
4. Ignoring end-of-service gratuity. UAE gratuity accrues from day one and must be funded — it is not the same as Spanish 20/33-day severance.
5. Assuming a Spanish-style dismissal classification carries over. The UAE has its own termination rules, without the fair/unfair/void regime — don’t assume either way.
6. Forgetting the entity’s own tax duties. Employing through a UAE company brings Corporate Tax and possibly VAT obligations that must be registered on time.

The clean way to avoid all six is to let a local, FTA-registered team stand up your UAE employment, payroll and tax framework from the outset. That’s precisely the remit of Fastlane’s payroll services and company incorporation support.

Key terms glossary