The information must be provided in writing, in a language that the foreign worker understands.

There is no obligation to indicate specific trade union organisations active at the employer, nor to provide any contact details. A general statement that a foreign worker has the right to join a trade union is sufficient.

This information must also be provided even when no trade unions operate at the employer.

It applies to foreign workers employed after 1 June 2025, as well as those already employed before that date.

It concerns both foreign workers employed under employment contracts and those working under civil law contracts.

The act does not provide any sanctions for non-compliance with this obligation.

Employers should therefore provide appropriate notifications to their foreign employees.

Find more articles in PRO HR September 2025.