The Administrative Chamber of the Supreme Court has issued a ruling of extraordinary practical significance for the exercise of inspection functions in Spain. In Resolution No. 441/2026, dated April 14, with Justice Luis María Díez-Picazo as the reporting judge, the Supreme Court establishes the legal principle that the Labor and Social Security Inspectorate may not enter a company’s registered office without judicial authorization, even if it does not conduct a search or seize documents. This ruling has the potential to profoundly alter the balance between the effectiveness of inspection activities and the protection of fundamental rights in the business sector.
The facts: entry without consent or a court order
The case stems from an operation conducted by the Valencia Labor Inspectorate, which, on October 23, 2023, with the assistance of the National Police, entered an industrial warehouse in the town of Foios (Valencia) where both the workplace and the registered office of the company Francisco Ballester, S.L.—which specializes in freight transport—were located. The entry took place without the manager’s consent and without a court order, as part of an investigation related to the hiring and termination of employees at a different commercial entity. During the operation, no search was conducted nor were any documents seized; the action was limited to merely entering and remaining on the premises.
The company filed an administrative appeal alleging a violation of the fundamental rights to the inviolability of the home and to effective judicial protection. The High Court of Justice of the Valencian Community dismissed the claims, finding that those rights had not been violated, which led the company to file a cassation appeal with the Supreme Court.
The fundamental question: Does the Constitution protect the registered office of legal entities?
Article 13.1 of Law 23/2015, of July 21, governing the Labor and Social Security Inspection System, provides that inspectors are authorized to “enter freely at any time and without prior notice any workplace, establishment, or location subject to inspection.” The only exception provided for in the law concerns cases where the workplace coincides with the residence of a natural person, in which case express consent or, failing that, judicial authorization is required.
The State Attorney’s Office argued that the constitutional protection of the domicile of legal entities is limited to spaces related to the custody of documentation or the company’s management headquarters; therefore, mere entry into a workplace—without a search or seizure—would not violate Article 18.2 of the Spanish Constitution.
Supreme Court ruling: Judicial authorization is required even for mere entry
The Supreme Court categorically rejects the argument that the absence of a search warrant or seizure order exempts authorities from the requirement of judicial authorization. The Court holds that Article 18.2 of the Spanish Constitution protects the inviolability of the domicile of both natural and legal persons, and that such protection takes effect from the very moment of entry, regardless of what occurs thereafter.
The ruling concludes that the omission of Article 13.1 of Law 23/2015 regarding the domicile of legal entities constitutes a legal gap that must be filled by the direct application of the constitutional provision. In this regard, the Chamber goes so far as to state that “it is worth asking” whether said provision “is tainted by unconstitutionality by omission” for failing to require judicial authorization to access a company’s registered office.
However, the Supreme Court introduces a relevant nuance: when there is “a noticeable physical separation” between the office area of the registered office and the workplace area, entry limited exclusively to the workplace would not constitutionally require judicial authorization. In the case at hand, however, such a separation did not exist.
Practical implications: a direct impact on the Spanish business community
The significance of this ruling can hardly be overstated. The Spanish business landscape is composed primarily of small and medium-sized enterprises, where it is common for the registered office to be located at the same address as the workplace. If this doctrine becomes established case law—remember that, for the moment, this is a single ruling—the Labor Inspectorate will need judicial authorization to access a very significant proportion of workplaces in Spain, which would compromise the immediacy of “surprise” inspections, a fundamental tool for detecting labor fraud and irregularities.
Critical Assessment: Legal Loophole or a Deliberate Legislative Choice?
The most contentious aspect of the ruling lies, in my view, in the premise upon which its reasoning is based: the existence of an alleged legal loophole. As Professor Adrián Todolí has pointed out, Article 13.1 of Law 23/2015 establishes a strict general rule—free access to workplaces—and a single express exception—the residence of a natural person. From this perspective, we are not dealing with a gap, but rather with a conscious legislative choice: the legislature defined the scope of the exception and did so explicitly. What the Supreme Court is doing, in reality, is expanding the legal exceptions beyond what the legislature intended, in tension with the principle of restrictive interpretation of exceptional rules (Art. 4.2 of the Civil Code).
Additionally, it is striking that the ruling does not address—nor did the parties raise—the existence of international commitments undertaken by Spain regarding labor inspection, in particular ILO Convention No. 81, which recognizes broad powers of access for labor inspectors as an essential element of the control system (Art. 12). This is a provision that is fully applicable under domestic law, and its interpretive significance should not be ignored.
Conclusion: A turning point for inspection practices
We are facing a ruling that, if upheld, will mark a turning point in the relationship between companies and the Labor Inspectorate. Labor law professionals must closely monitor the development of this legal doctrine, particularly if a second ruling is issued that establishes case law or if a constitutional challenge is filed. In the meantime, companies should be aware that, according to this Supreme Court ruling, they have the right to require prior judicial authorization for any inspection visit to their registered office, even if no search is planned. Likewise, the Labor Inspectorate and the legislature should reflect on the need for a clear regulatory response that provides legal certainty to all parties.
