Labor Complaint Form Spain (Denuncia Laboral)

A Labor Complaint Form (Denuncia Laboral) in Spain is a formal written document submitted by a worker (trabajador), former worker, or third party to report alleged violations of labor law, occupational safety regulations, or social security obligations by an employer (empresario) to the competent authority — principally the Inspección de Trabajo y Seguridad Social (ITSS). The ITSS operates under the Ministerio de Trabajo y Economía Social and is governed by Ley 23/2015, de 21 de julio, Ordenadora del Sistema de Inspección de Trabajo y Seguridad Social. Labor complaints may also be the precursor to conciliation proceedings at the SMAC (Servicio de Mediación, Arbitraje y Conciliación) under Article 63 of Ley 36/2011, de 10 de octubre, Reguladora de la Jurisdicción Social, which is mandatory before filing claims before the Juzgado de lo Social.

The Denuncia Laboral before the ITSS is governed by Article 9 of Ley 23/2015, which establishes that any natural or legal person who has knowledge of a labor law infraction may file a complaint with the ITSS. The ITSS is an autonomous administrative body whose inspectors (Inspectores de Trabajo y Seguridad Social) have the power under Article 13 of Ley 23/2015 to: enter workplaces without prior notice; examine employment contracts, payroll records, working time registers, and social security documentation; require the employer to produce documentation; interview workers; and issue actas de infracción (infraction notices) leading to administrative fines under Real Decreto Legislativo 5/2000, de 4 de agosto, por el que se aprueba el texto refundido de la Ley sobre Infracciones y Sanciones en el Orden Social (LISOS).

The LISOS classifies labor infractions into three categories with corresponding fine ranges (updated periodically by Ley de Presupuestos Generales del Estado): minor infractions (infracciones leves) — €70 to €750; serious infractions (infracciones graves) — €751 to €7,500; and very serious infractions (infracciones muy graves) — €7,501 to €225,018. The most serious violations — employing workers without social security registration, systematic wage theft, serious workplace safety violations causing injury, and child labor — attract the highest fines and may also trigger criminal liability under Articles 311-318 of the Código Penal (offences against workers' rights).

The SMAC (Servicio de Mediación, Arbitraje y Conciliación) — which operates at the provincial level under each Comunidad Autónoma's labor authority — administers the mandatory pre-litigation conciliation procedure under Article 63 of Ley 36/2011. Before filing most employment claims (including wrongful dismissal, unpaid wages, and working condition changes) before the Juzgado de lo Social, the claimant must first file a papeleta de conciliación at the SMAC. If conciliation fails or the employer does not appear, the SMAC issues a certificate (acta de conciliación) allowing the case to proceed to court. The 20-day deadline for challenging a dismissal under Article 59.3 ET is suspended from the date the papeleta de conciliación is filed at the SMAC until the conciliation attempt is concluded.

Workers who report labor violations also have protections under Ley 2/2023, de 20 de febrero, reguladora de la protección de las personas que informen sobre infracciones normativas y de lucha contra la corrupción (Whistleblower Protection Act), which transposes EU Directive 2019/1937 and prohibits retaliation against workers who report violations through official channels or internal reporting systems.

A Labor Complaint Form (Denuncia Laboral) in Spain is needed whenever a worker, former worker, or third party wishes to formally report an employer's violation of labor law, social security obligations, or occupational health and safety regulations to the Inspección de Trabajo y Seguridad Social (ITSS) or initiate pre-litigation proceedings.

A Denuncia Laboral before the ITSS is appropriate when an employer fails to register workers with the Tesorería General de la Seguridad Social (TGSS) — working without being in alta is a serious infraction under Article 22.2 of the LISOS, and the ITSS can order immediate registration and impose fines. Workers who discover they were not registered may file a complaint even after leaving the job.

A Labor Complaint is needed when an employer has not paid wages (impago de salarios) owed under the employment contract or the applicable convenio colectivo. Wage theft (robo de salario) is both a labor infraction under Article 29 of the LISOS and, in serious cases, a criminal offense under Articles 311-312 of the Código Penal. The worker may simultaneously file a SMAC papeleta de conciliación to claim unpaid wages before the Juzgado de lo Social.

A Denuncia Laboral is required before the Juzgado de lo Social for most employment disputes — the papeleta de conciliación at the SMAC under Article 63 of Ley 36/2011 is a mandatory procedural step before the court action. Exceptions to the mandatory conciliation requirement include dismissal claims against the state (demandas contra el Estado), certain collective action claims, and urgent interim relief applications.

A Labor Complaint is appropriate for reporting serious occupational health and safety violations under Ley 31/1995 de Prevención de Riesgos Laborales (LPRL) — including failure to conduct risk assessments (evaluación de riesgos), absence of personal protective equipment (equipos de protección individual — EPI), unsafe working conditions, or failure to provide mandatory safety training. The ITSS has a specialist occupational safety inspection unit that investigates these complaints.

A Denuncia Laboral is needed to report discrimination (discriminación) in the workplace — on grounds of sex, racial or ethnic origin, disability, age, sexual orientation, religion, or political opinion — under Ley Orgánica 3/2007 (LOI), Real Decreto Legislativo 1/2013 (disability), and Ley 15/2022 integral para la igualdad de trato y la no discriminación. The ITSS investigates discrimination complaints and can issue infractions under Article 16 of the LISOS.

Under the Estatuto de los Trabajadores (ET) RDL 2/2015, Spanish employment law governs contracts, dismissals, and working conditions. The Tesorería General de la Seguridad Social (TGSS) administers social security contributions. The Servicio Público de Empleo Estatal (SEPE) manages unemployment benefits. The Inspección de Trabajo y Seguridad Social enforces labour compliance. The Juzgados de lo Social hear employment disputes under the Ley Reguladora de la Jurisdicción Social (Ley 36/2011).

A complete Labor Complaint Form (Denuncia Laboral) in Spain for submission to the Inspección de Trabajo y Seguridad Social (ITSS) or as a papeleta de conciliación at the SMAC should contain the following elements.

Complainant Identification: The full name, DNI/NIE, address, phone number, and email of the person filing the complaint (denunciante). The ITSS accepts anonymous complaints, but identified complaints receive priority treatment and the complainant receives updates on the inspection outcome. For SMAC papeletas de conciliación, full identification is mandatory since the complainant is a party to the proceedings.

Employer/Respondent Identification: The full legal name of the employer (razón social), NIF/CIF, registered address, work premises address, and the Código de Cuenta de Cotización (CCC). For the SMAC papeleta, the respondent's address must be accurate since the SMAC sends the conciliation notice to this address — a wrong address can invalidate the conciliation attempt.

Description of the Violation: A clear, factual, and specific description of the alleged violation — what happened, when it happened, how long it has been occurring, and which specific legal provisions the employer has violated. References to relevant articles of the Estatuto de los Trabajadores, LISOS, Ley 31/1995 LPRL, or LGSS strengthen the complaint. Vague descriptions delay ITSS investigation.

Evidence and Documentation: A list of available evidence — employment contract copies, payslips (nóminas), working time records, text messages or emails, photographs, witness names and contact details. The ITSS inspectors conduct independent investigations, but complainant-provided evidence directs their attention to specific violations.

Claims for SMAC Conciliation: For papeletas de conciliación at the SMAC, the specific monetary or legal claims must be stated — e.g. unpaid wages of €X for period Y, reinstatement following dismissal, or compensation for unfair dismissal under Article 56 ET. The SMAC conciliation record (acta) must reflect the specific claims for the subsequent court action.

Whistleblower Protection Notice: A statement invoking the protections of Ley 2/2023 (Whistleblower Protection Act) where the complainant is a current employee reporting violations internally or externally — placing the employer on notice that any retaliatory action will constitute an additional violation. Under Ley 2/2023, retaliation against a whistleblower reporting through official channels is prohibited and sanctions include reinstatement and compensation.

Signature and Date: The complainant's signature and the date of filing. For ITSS complaints filed electronically through the ITSS Sede Electrónica, the electronic signature or Cl@ve PIN serves as authentication. Forms-legal.com provides this Labor Complaint template as a practical guide. For employment disputes, consult with a sindicato (CCOO, UGT, USO), a worker's legal representative, or an abogado laboralista before filing — they can assess the strength of the complaint and advise on the most effective channel.

Additional compliance elements for a Labor Complaint Form Spain (Denuncia Laboral) used in Spain include: Under the Estatuto de los Trabajadores (ET) RDL 2/2015, Spanish employment law governs contracts, dismissals, and working conditions. The Tesorería General de la Seguridad Social (TGSS) administers social security contributions. The Servicio Público de Empleo Estatal (SEPE) manages unemployment benefits. The Inspección de Trabajo y Seguridad Social enforces labour compliance. The Juzgados de lo Social hear employment disputes under the Ley Reguladora de la Jurisdicción Social (Ley 36/2011). Forms-legal.com provides this template as a starting point for Spain-compliant documentation.