What is the REA?
The REA is a public administrative register established by Law 32/2006 and further developed by Royal Decree 1109/2007. It relates to the requirements for companies involved in subcontracting on construction projects. Registration is with the competent labor authority and is valid throughout Spain.
Its purpose is not to certify that a specific project is risk-free, nor to approve every job. Registered companies must maintain compliance with the requirements and fulfill their obligations throughout the project. Registration provides specific regulatory evidence within a much broader framework of preventive management.
Which subjects must register
In general, companies and self-employed workers with employees who intend to be hired or subcontracted to carry out work on a construction site within the scope of the regulations must register. The actual work performed is more important than the commercial label of the sector to which the company belongs.
Self-employed individuals without employees are not required to register solely for their personal work. Neither are promoters who do not assume the role of contractor. There are specific situations, such as temporary joint ventures, partnerships, or companies that relocate workers, whose status must be analyzed according to the regulations and information provided by the competent authority.
What requirements are met?
The regulations require, among other things, an independent production organization, personnel and material resources, assumption of business risks, and direct exercise of organizational and management powers. They also stipulate preventive measures and the necessary training of human resources, as applicable.
Registration is based on the documentation and declarations required by the procedure. It should not be presented as a comprehensive pre-inspection of every piece of equipment or person participating in a project. If the labor authority requires proof of continued compliance, the company must be able to demonstrate this beyond simply showing its registration number.
Validity, renewal and changes
Registration is valid for three years and may be renewed for equal periods. The renewal application must be submitted within six months prior to its expiration, in accordance with Royal Decree 1109/2007. Internal management must anticipate this deadline and retain records of the process and its outcome.
Changes to your information must also be reported, and cancellations must be requested when applicable. A change of address that modifies the information required by the competent authority has a specific procedure; it is not advisable to create a second, separate registration. The correct procedure and channel can be verified with the relevant administration, especially if there are specific regional applications.
Pre-hiring check
The hiring company must verify the applicable requirements of the company it will be working with. Regulations stipulate that a registration certificate must be requested within one month prior to the start of the contract for the purposes outlined therein. A simple registry search and this certificate should not be confused without first analyzing their respective purposes.
The verification must be linked to the correctly identified company and the order. A number copied from an email or an old certificate from another entity within the group is insufficient. Internal approval may incorporate this verification, but it must maintain its scope and not replace it with a generic approved supplier indicator.
Relationship with other work documents
The subcontracting log documents the chain of companies and self-employed workers involved in a construction project, in accordance with legal requirements. The REA (Register of Accredited Companies) refers to business registration. They are complementary instruments, with different responsibilities, content, and purposes; having one does not allow for omitting the other when it is required.
Preventive coordination must continue to address risks related to concurrency, information, instructions, and working conditions. Contractor management also needs to verify the resources and personnel who will carry out the specific activity. Registration does not automatically make any intervention performed by a registered company appropriate.
Practical example
A contractor is going to bring an installation company onto a project. Before work begins, they identify the company that will actually carry out the work, verify its registration with the REA (Register of Accredited Companies), and obtain the necessary certification. They also review the project’s occupational health and safety protocols and its integration into the subcontracting chain.
During the preparation phase, it is proposed to replace the company with another entity with a similar name. The contractor does not automatically reuse the previous verification: they verify the new entity and update the documentation and coordination. This example illustrates why legal identification and the timing of the verification are just as important as having a registration number.
Common mistakes
Common mistakes include requiring registration from any self-employed individual without considering their specific situation, confusing REA (Register of Accredited Companies) with private certification, and assuming its validity never expires. Another mistake is believing that registration eliminates all liability or guarantees all safety conditions for a particular project.
Effective management assigns responsibilities for verification, renewal, and communication of changes. It maintains verifiable evidence and links the registration to the actual contracting. In unique situations, the company’s actual position and applicable regulations must be analyzed, using official registration information rather than inferring obligations based on the name of the activity.
