This paper analyzes Spanish Supreme Court Judgment 1582/2026, issued on April 14, addressing the compatibility between labor inspections and the fundamental right to the inviolability of corporate premises. The ruling resolves an appeal concerning an inspection conducted without judicial authorization in a company’s registere office. The Supreme Court concludes that mere entry into corporate premises, even without document searches or seizures, requires prior judicial authorization, thereby strengthening constitutional protection under Article 18.2 of the Spanish Constitution. The study examines the legal reasoning of the judgment, its interpretation of Article 13 of Law 23/2015, and its broader implications for administrative action. Additionally, it evaluates the practical consequences for labor inspection practices and clarifies the concept of “domicile” in the corporate context.