Register as an employer in Belgium

In case you want to employ staff in Belgium you must register as an employer with the National Social Security Office (NSSO) using the online service WIDE. If you wish to appoint mandataries to support you with your administration, use the Mahis online service to mandate them.

In the WIDE online service, a legal representative identifies the company as an employer with the NSSO. After registration, company representatives with due access can modify entries or unregister the company as an employer.

At this time, there are multiple versions of WIDE: one for those without a Belgian enterprise number, and one for those who do have a Belgian enterprise number.

You do not have a Belgian enterprise number

Use this version of WIDE (in French) to receive an enterprise number and to identify as an employer. You need a digital key in order to log in. You can obtain this key in two ways:

  1. Via eIDAS. Information about this digital key can be found on the eIDAS help page.
  2. If your country does not support eIDAS, you are required to make an appointment with Sigedis, the partner of the social security institutions for the identification of persons. Sigedis will help you to obtain a digital key by video call. Make an appointment for a video call on the belgianid.be website.

Please note: only a legal representative of the company can request an employer identification. In the course of your registration, you will need to upload the following documents:

  • A photo of your ID (both sides)
  • A document proving the link between yourself and the company
  • The company statutes

Your company already has a Belgian enterprise number

Use the version of WIDE on the Social Security Enterprise Portal (in French) and register as an employer. Consult the WIDE manual for a step-by-step guide on how to use this online service.

To mandate an accredited social secretariat or service provider to manage your workforce, complete declarations or carry out other administrative duties, use the Mahis online service. Consult the Mahis manual for a step-by-step guide on how to appoint mandataries. You also find more information on Mahis on the Social security enterprise portal (in French).

The procedure information on this page was funded by the European Union.

Logo Funded by the European Union – NextGenerationEU

Funded by the European Union – NextGenerationEU. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or European Commission. Neither the European Union nor the European Commission can be held responsible for them.

NATIONAL SOCIAL SECURITY OFFICE (NSSO)

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