Contractors of works on an immovable property – compulsory notification = 30 bis notification.

In the context of the fight against social fraud there is a reporting obligation of certain works through the portal site of the Belgian social security authorities (NSSO).
One finds this application via the online service “Declaration of work”:
https://www.socialsecurity.be/site_nl/employer/applics/ddt/index.htm
Scope 30 bis:
What works you must notify?
Who should report?
When should the notification be done?
Penalty for non-notification:
The Regulation concerning the joint and several liability and withholding and transfer |