As of 1 March 2020, foreign employers who post employees from a member state of the European Union or EEA/Switzerland to work in the Netherlands are obliged to report this to the Dutch authorities (SVB).

The foreign employer (service provider) must make this report and provide a copy to the Dutch hirer (service recipient) of the service. The Dutch hirer has an obligation to check the notification and to report inaccuracies or not receiving a copy of the notification within 5 working days after the start of the activities in the Netherlands. Failure or incomplete reporting of the employment in question can be punished with a fine.

Not for every employment there is a reporting obligation. There are a number of exempt categories of employees.
A reporting obligation also applies to self-employed persons.

The notification must be made through the online notification portal.