
When a private sector employee seeks to submit a file on the AL’in platform or activate a Visale guarantee, a “company code” field appears in the form. Most candidates enter the number provided by their employer without checking if it is the correct identifier. The problem: two different codes circulate in exchanges between HR services and employees, and confusion between the two can block a request that is otherwise complete.
SIRET or specific code: why the AL’in platform requires an employer identifier
Since 2023-2024, Action Logement has gradually harmonized its online forms. For most procedures (loca-pass, Mobili-Jeune, mobility aids), the only required identifier is the employer’s SIRET number. This 14-digit number appears on every payslip, in the company’s identification area.
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The SIRET allows the platform to verify that the employer is indeed contributing to the Employer Participation in the Construction Effort (PEEC). If the contribution is active, the employee gains access to the services. No additional code is needed in this case.
The difficulty arises when the employer is part of a large group with multiple establishments. Some groups have negotiated with Action Logement a specific code related to housing reservations designated for their employees.
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This code, assigned directly by Action Logement, corresponds neither to the SIRET nor to the APE code. It opens access to a pool of housing reserved by the contributing company with partner social landlords. Understanding the Action Logement company code and its variants helps avoid entering the wrong identifier at the time of submission.

Company code and specific Action Logement code: what distinguishes them concretely
The two terms often come up in HR exchanges, sometimes interchangeably. However, their function is different.
The company code in the common sense
In most French administrative contexts, “company code” refers either to the SIRET or to the APE code (4 digits + 1 letter assigned by INSEE). On the payslip, the APE code identifies the main activity branch. The APE code has no utility for Action Logement procedures.
When the AL’in platform requests a “company code,” it expects the SIRET. The confusion arises from the vocabulary: an employee reading “company code” may look for the APE code or even an internal number from their group.
The specific code issued by Action Logement
This code is an identifier unique to Action Logement. It exists only for companies (often large ones) that have signed a housing reservation agreement with one or more landlords.
- It is generated by Action Logement, not by INSEE or the employer itself.
- It provides access to a pool of reserved housing, distinct from the general pool available to all contributing employees.
- Its validity period may be limited, requiring renewal.
An employee who enters their SIRET while their company has a specific code risks missing out on the housing reserved by their employer. Conversely, an employee whose company does not have a specific code and who searches for this code will waste time for nothing.
Check which identifier to use before submitting a file
You have just created your account on AL’in and the form asks you for a code. How do you know which one to enter?
- Look at your payslip: the SIRET is always there, usually at the top of the document, next to the name and address of the establishment.
- Contact your HR department with a specific question: “Does my company have a specific Action Logement code for housing reservations?” If the answer is yes, ask for this code and its validity date.
- In case of doubt, test the SIRET on the platform: if your employer does not have a specific agreement, the SIRET is sufficient to validate eligibility and access the aids.
- If the SIRET is rejected by the form, it is a sign that your company uses a specific code. Go back to your HR or use the contact form of Action Logement by providing your SIRET to obtain the correct identifier.

Control and traceability: why the correct code protects your file
ANCOLS (National Agency for the Control of Social Housing) has strengthened its controls since 2022 on housing allocations related to Action Logement. Each allocation must prove the link between the employee, the contributing company, and the reserved housing.
An incorrect code does not only cause a technical rejection of the form. It can also delay the processing of the file by several weeks, while the landlord or Action Logement manually verifies the consistency of the information. For Visale guarantee requests, an incorrect identifier prevents the generation of the visa, blocking the signing of the lease.
Agreements between local authorities, social landlords, and Action Logement now include objectives for directing housing towards employees of contributing local companies. This direction relies directly on the specific code: without it, the housing reserved by your employer may be reallocated to another candidate.
Entering the correct identifier from the first input remains the simplest precaution to avoid a blockage. A correct SIRET or an up-to-date specific code ensures that the file enters the right allocation circuit, whether it is a home purchase loan, professional mobility aid, or social housing request.