What an employee fraud investigation in Spain covers
An employee fraud investigation in Spain examines conduct that damages a company from the inside: feigned or exaggerated sick leave, chronic absenteeism, working a second job while on the payroll or on medical leave, falsified expenses and timesheets, misuse of company resources, and internal theft. The common thread is labour fraud — behaviour that breaches the duty of good faith owed to the employer and often causes quantifiable loss.
The work is typically commissioned by HR and legal departments, in-house counsel, international companies operating in Spain and the law firms that advise them. A licensed private detective turns suspicion into documented, verifiable fact: instead of an internal hunch that is hard to act on, you obtain an objective account of observable conduct, recorded by an impartial professional whose findings can later support a disciplinary or judicial decision.
Sick-leave fraud and absenteeism: how they are investigated lawfully
A sick-leave fraud investigation focuses on whether an employee signed off on medical leave is carrying out activities incompatible with the condition declared — for example performing physical work, running another business or working for a competitor while drawing sick pay. The detective documents observable, public conduct over the relevant period and reports objectively on what is, and is not, consistent with the claimed incapacity.
An absenteeism investigation in Spain addresses a different pattern: repeated unjustified absence, leaving the workplace during paid hours, or systematic misuse of working time. In both scenarios, employee surveillance in Spain is lawful only when conducted by a licensed professional, confined to public settings, and proportionate to the matter. The aim is never to intrude on private life, but to evidence behaviour that contradicts the employee's obligations.
Internal theft, expense fraud and other labour fraud
Internal theft and shrinkage — missing stock, diverted goods, cash discrepancies — are among the most costly and hardest forms of labour fraud to pin down internally, because the people involved usually know the company's controls. A detective can corroborate suspicions through discreet observation, verification of movements and patterns, and structured documentation that distinguishes genuine evidence from rumour.
Related conduct includes falsified expense claims, manipulated working hours, leaking confidential information, and undisclosed conflicts of interest such as steering business to a related party. Each requires an investigation plan tailored to what the specific behaviour demands to be proven, always staying within the limits that make the resulting evidence usable in subsequent proceedings.
Lawful employee surveillance under Spain's Private Security Law
In Spain, private investigation is a regulated activity governed by the Private Security Law (Ley 5/2014). Only a licensed private detective — a holder of the professional ID card (TIP) and listed in the National Private Security Registry (RNSP) — may lawfully carry out employee surveillance and report on the findings. Work performed by an unlicensed party is not only unlawful but also risks rendering any evidence worthless.
Lawfulness also depends on data protection. The investigation must rest on the employer's legitimate interest, remain proportionate, and be limited to what is strictly necessary, in line with the GDPR and Spanish data protection rules. A professional detective observes conduct in public, never accesses private spaces unlawfully, and frames the enquiry so that privacy and proportionality are respected throughout.
From investigation to court: the evidentiary value of the report
The detective's report is more than an internal memo. Under article 265.1.5 of the Spanish Civil Procedure Act (LEC), it can be submitted as documentary evidence, and the investigator may be called to ratify and explain it before the court. This is the decisive advantage of instructing a licensed professional: the findings are built from the outset to withstand scrutiny.
In practice, this evidence supports disciplinary dismissals, claims before the labour courts (Jurisdicción Social), and civil proceedings where loss must be proven. A well-documented report — objective, dated and ratifiable — gives the company and its lawyers a solid footing to act with confidence rather than on assumption.
Why a licensed private detective — and why La Sociedad Clave
La Sociedad Clave is an independent collective of licensed Spanish private detectives that gives the profession a voice before society and institutions. We are not an agency: our role is to explain how these investigations are conducted lawfully in Spain and to connect you with a qualified, TIP-holding professional suited to your matter.
For an international company, law firm or institution facing employee fraud in Spain, that distinction matters. You deal with a vetted, registered detective who understands the legal framework, works to evidentiary standards, and treats the assignment with the discretion that workplace investigations demand.
Frequently asked questions
Is employee surveillance legal in Spain?
Yes, when carried out by a licensed private detective for a legitimate, proportionate purpose. Under Ley 5/2014, investigators may observe an employee's conduct in public settings relevant to the case. Surveillance must respect privacy, data protection and proportionality, which is exactly why a TIP-holding professional is essential.
Can a company investigate an employee who is on sick leave?
Yes. A common, lawful objective is verifying whether an employee on medical leave is performing activities incompatible with their declared condition — for example, working elsewhere. A licensed detective documents observable, public conduct and produces a report the company can use in disciplinary or judicial proceedings.
Is a private detective's report admissible as evidence in Spanish courts?
Yes. Article 265.1.5 of the Spanish Civil Procedure Act (LEC) allows the detective's report to be submitted as documentary evidence, and the investigator can be called to ratify and explain it in court. This evidentiary value is one of the main reasons to instruct a licensed professional.
What is the difference between absenteeism and sick-leave fraud?
Absenteeism is repeated, unjustified absence or misuse of working time; sick-leave fraud is a feigned or exaggerated medical condition used to obtain paid leave. Both are forms of labour fraud and both can be investigated lawfully, with surveillance tailored to what each behaviour requires to prove.
Does the employee have to be told they are being investigated?
No prior notice to the individual is required for lawful detective work, but the investigation must rest on a legitimate interest and stay proportionate under the GDPR and Spanish data protection rules. The detective limits enquiries to what is necessary and never enters private spaces unlawfully.
How do I start an employee fraud investigation in Spain?
Contact La Sociedad Clave with an outline of the situation. We connect you with a licensed, TIP-holding private detective listed in the National Private Security Registry, who assesses feasibility, defines a lawful, proportionate plan and delivers a court-ready report you can use in disciplinary or judicial proceedings.
Facing suspected employee fraud, sick-leave abuse or internal theft in Spain? Contact La Sociedad Clave and we will connect you with a licensed, TIP-holding private detective who will investigate lawfully and discreetly, and deliver a report ready to stand up in a Spanish court.