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The mandatory attendance registration IN and OUT is being extended to cover works on immovable property (with the exception of cleaning activities) and the supply of ready-mixed concrete. This applies to workplaces where work is carried out with a total value of at least 500,000 euros excluding VAT (Programme Law of 30 May 2026, Title 6, Chapter 1, Articles 124 to 131).

To ensure the application is fully functional and to give you sufficient time to prepare, the obligation to register attendance will not come into force until 1 April 2027.

Check in and out at work

Check in and out at work is the online service for registering attendance at work in some selected sectors.

Since 1 September 2024 when carrying out certain cleaning activities, it is mandatory to register the start and end of the activities and breaks.

As from 1 April 2027 when carrying out other types of works on immovable property (construction, electrics, carpentry, earthworks, etc.) and the supply of ready-mixed concrete, it will be mandatory to register any arrival at and departure from the workplace.

Which cleaning activities must be registered?

It only concerns 'activities whose purpose is to clean a property on behalf of a third party' and for which the total amount (exclusive of VAT) is equal to or exceeding the following threshold amount:

  • 30,000 euros without a subcontractor,
  • 5,000 euros with 1 subcontractor,
  • no threshold amount for 2 or more subcontractors.

Registering attendance is therefore mandatory whenever a chain declaration in Declaration of works (in French) is required.

What exactly should be registered?

Anyone who carries out the aforementioned cleaning activities, must register:

  • the start and end of their proper activities, and
  • breaks.

There are two types of registration: In and Out. Registration 'In' should be done when the person carrying out the activities starts work. Registration 'Out' is due at the end of the activities. The start and end of breaks should also be registered. Registration 'Out' is due at the start of a break. Registration 'In' is due at the end of a break.

Which works on immovable property must be registered?

As from 1 April 2027 attendance registration shall be mandatory for everyone carrying out specific works on immovable property (with the exception of cleaning activities) and the supply of ready-mixed concrete at a workplace for which total cost, exclusive of VAT, is equal to or exceeds 500,000 euros.

Registering attendance is mandatory as soon as this amount is reached, be it at the start of or during the works.

What exactly must be registered?

Everyone carrying out specific works on immovable property (with the exception of cleaning activities) and the supply of ready-mixed concrete will have to register when they arrive at and leave the workplace.

There are two types of registration: In and Out. The ‘In’ registration must take place when the person carrying out the works arrives at the workplace. The ‘Out’ registration must take place when the person carrying out the works leaves the workplace.

Both the person sending someone to work and the person carrying out the work are responsible for the registration.

Employees, self-employed workers, temporary agency workers, job students and trainees self-register their presence at the workplace at the site and without delay. As an employer, you cannot do the registration in advance.

Employers

As an employer, contractor or company that has a contract with a client, you use the Check in and out online service to check the registrations of your employees.

You must ensure that your employees, your subcontractors and the subcontrators' employees are registered. You’re required to:

  • provide a registration system to the subcontractors you refer to, or agree by mutual consent that the contractor and any subcontractors use an alternative registration method,
  • ensure that data for your company is effectively and correctly registered and forwarded to the database,
  • provide your employees with a registration device compatible with the registration device at the workplace, and
  • inform your employees about the registration procedure.

Inform your employees

You should inform you employees about the obligation to register their attendance and about the means to do so.

As far as cleaning activities are concerned, you can use the following means:

The following resources can be used for other types of works on immovable property and the supply of ready-mixed concrete:

Reporting registration errors

Contact the NSSO within 30 days of the registration date to request changes to registrations of your employees. You also have to provide the necessary supporting documents.

Employees, self-employed workers, temporary agency workers, job students and trainees

Employees, self-employed workers, temporary agency workers, job students and trainees who carry out cleaning activities must register the start and end of their activities at the workplace. They must also register their breaks.

Employees, self-employed workers, temporary agency workers, job students and trainees carrying out other specific types of works on immovable property will have to register their arrival at or departure from the workplace. They need not register their breaks.

They use Check in and out at work to:

  • register themselves at the site and without delay, and
  • check their own registrations.

Self-employed workers who use subcontractors are bound by the same rules as employers.

Organisations employing a temporary agency worker have to make the registration device available to the temporary agency worker or contract the registration method.

Reporting registration errors

Employees who notice an error in their registration have to report this to their employer within 30 days of the registration date.

Self-employed workers should contact the NSSO for any changes in their registrations.

For foreign companies

To access the secure Check in and out at work online service, your company must first be registered with the Crossroads Bank for Enterprises (CBE). Please contact an accredited business counter for this. You will find the list of accredited business counters on the FPS Economy website.

As the legal representative of the company, you will be assigned a BIS number. As soon as your company is registered with the Crossroads Bank for Enterprises, it will receive an enterprise number.

If you have completed the above step, you will still need an approved digital key to log in a secure online service via CSAM. Approved keys are MyGov.be, itsme, eIDAS or a username/password with a code via mobile app or email ('TOTP').

Log in to CSAM with your company number, your BIS number and your digital key. As the legal representative of your company, you can appoint yourself Chief Access Manager to manage access to your online services. As Chief Access Manager, you determine which employees have access to Check in and out at work. You can also appoint employees as Access Managers to help you manage access.

Once this step is taken, you and your employees can log in to the secure Check in and out at work online service using the button on this page.

For foreign employees and self-employed workers

To have access to the secure Check in and out at work online service, foreign employees and self-employed workers must have an approved digital key such as MyGov.be, itsme, eIDAS or a security code via e-mail or in a mobile app ('TOTP').

Log in at Check in and out at work with one of the following digital keys:

  1. MyGov.be: You can use this option if you have a Belgian electronic identity card. More information is available on the help centre page of the MyGov.be website.
  2. itsme: If you have a Belgian electronic identity card, you can use this option. For more information, please visit the itsme page of the CSAM help centre.
  3. eIDAS: If you don’t have a Belgian identity card but another approved European electronic proof of identity, you can use this digital key. To find out whether your electronic proof of identity authorises you to log in, click on ‘Log in with an electronic identification means recognized at European level’. You will then get an overview of which member states already have an electronic proof of identity.
    If you are logging in with eIDAS for the first time, you will need a European electronic proof of identity, an email address and a phone number. If you don’t have a Belgian national registration number or BIS number, a number will be created. More information can be found on the eIDAS page of the CSAM help centre.
  4. E-mail TOTP: Your country doesn’t support the digital keys itsme or eIDAS or you don’t have a Belgian national identification number (BIS number)? Then make an appointment for a video call with Sigedis, the partner of the social security institutions for personal identification. Please make an appointment on the belgianID-website. After checking a number of documents, Sigedis will determine whether you already have a BIS number. If you don’t have one, Sigedis will create a number for you. During your video call, Sigedis will help you to obtain a digital key.

The legal basis for attendance registration in the cleaning sector is set out in the Programme Law 26/12/2022, Title 4, Chapter 1, art. 22 to 48, and Chapter 2, art. 49 (§ 9 art. 30 bis of the Law of 27/06/69).

The legal basis for registering attendance for works on immovable property, with the exception of cleaning activities, and the supply of ready-mixed concrete can be found in Section 4, Chapter V of the Law of 4 August 1996 on the well-being of workers in the performance of their work.