First visit

Are you a foreign employer, or their agent, wishing to post one or more workers to Belgium on a temporary basis? Are you a foreign employer, or their agent, responsible for workers working part-time in Belgium?

Are you a self-employed person established in another country coming to provide services in Belgium on a part-time or temporary basis?

If so, you need to declare your presence as an independent, or that of your workers before they begin their activities in Belgium.

We will explain how to make this declaration in two simple steps:

In order to make declarations, you need to create your user account. This is a one-off action: you enter your data into Limosa once in order to manage your declarations.

N.B.: the user account must be created using your personal data, not the business details.

What data do you need to create a user account?

  • Your email address,
  • if you have one: your Belgian social security ID number (NISS),
  • if you don't have an NISS, your details:
    • surname and first name,
    • date of birth,
    • gender
    • home address, and
    • your identification number in your country of residence (national number, passport number, social security or social security or pension number),
  • if you have one: your enterprise number of your NOSS identification number, and
  • your fixed or mobile telephone number.

Go to the homepage of the Limosa online service in order to set up your user account.

Confirmation mail

When you have made an account creation request, you will receive confirmation by email. You have 72 hours to activate the link in the email. You can then make your online declaration.

If you have not been able to activate your account within 72 hours, please get in touch with our Contact Center.

Before undertaking activities in Belgium as an employer, you need to declare the work.

The Limosa online service will allow you to file, extend or cancel declarations.

Apart from the Limosa declaration, there are other obligations you must meet, depending on your situation:

Before arrival in Belgium

Businesses in the construction sector must register any work with the social security authorities. As an entrepreneur, if you sign a construction works contract with the principal (contracting authority) on Belgian soil, you will have to file a declaration of works and check-in employees.

The workers you employ must have travel documents. For citizens from the European Economic Area (EU countries + Norway, Iceland and Liechtenstein) and Switzerland, a national passport or ID card is sufficient.

For citizens of other countries, additional documents, such as a visa, are necessary. This condition depends on the duration of your stay in Belgium, among other things.

Check the website of the Belgian federal public service for Business for more information.

Workers you employ must have a residency permit from the commune of their place of residence.

Check the website of the Immigration Office for more information.

The employer needs to obtain an employment authorisation. Furthermore, workers must be in possession of a Belgian work permit (in French).

Foreign employers requesting an employment permit and work permit must have a representative based in Belgium. Requests should be made to the Regions of Belgium:

The professional pass (in French) is needed for self-employed people looking to establish their business in Belgium.

As a self-employed person or company representative, you need to prove that you have basic knowledge of business management. This applies whether or not the business is your principal or secondary activity.

If you wish to practise one of the 42 regulated professions (in French), you should provide proof of your specific professional skills.

Proof may be provided in the form of a diploma or an EC declaration. This is a declaration from the country of origin as regards the individual's practical experience and education.

For more information, see the conditions of access to the profession (in French).

In principle, the following categories of people will receive a business registration number:

  • legal persons under Belgian law
  • legal persons under foreign or international law with offices in Belgium or who must register pursuant to an obligation under Belgian law
  • any natural or legal person, or association, which, in Belgium:
    • acts in the capacity of a commercial or artisanal business; or
    • is subject to social security as an employer; or
    • is subject to value-added tax; or
    • exercises an intellectual or liberal profession or acts as a service provider in their capacity as a self-employed person.

For more information on this subject, please see the page Website of the Ministry for the Economy, SMEs, Middle Classes and Energy: Information on the company registration number (in French).

Are you a carrier from another EU Member State looking to undertake transport activities to and from Belgium (and on Belgian soil)? If so, you need an EU transport authorisation. This authorisation can be obtained from the country in which you are established.

The EU transport authorisation is also required for inland transport activities. Inland transport refers to a foreign carrier carrying out transport activities between two locations within the same country.

N.B.: There is a temporary ban on carriers from certain EU Member States carrying out internal transport in Belgium. For more information, see the Department of Energy and Transport page.

During your stay in Belgium

The obligation in terms of employment law relates to posted workers: i.e. when a foreign company takes on a worker in Belgium on a temporary basis. When you employ workers posted to Belgian soil, you are required to comply with the working, pay and employment conditions provided for under Belgian law. These essential provisions ensure that the rights of posted workers are protected in Belgium.

For more information on the rules applicable to posted workers, see the principles related to the application of the employment law of the host country.

Employment documents allow the inspection services to check if you have fulfilled your obligations to posted workers as a foreign employer. The inspectors must be able to check how long the worker has been in service, their working hours, how many hours they have worked, what salary has been paid and what other benefits have been paid.

See the Employment Documents page (in French) at the Ministry for Employment, Work and Social Cooperation for more information.

Foreign companies who post personnel in Belgium for the purpose of carrying out construction work must adhere to the sector-related loyalty stamp scheme as set down in the collective labour agreement.

To do this they must create an account with the OPOC (Office Patronal d'Organisation et de Contrôle des régimes de sécurité d'existence):

For more information, please see the explanatory brochure.

For cross-border activities, international rules on social security (for example European Regulation 883/2004 or bilateral treaties on social security) provide for a form specifying the applicable social security regime.