Unlimited stay, opportunity or warning light?

Third-country nationals, posted to Belgium, can be authorised to stay for an unlimited period. Practically, the Immigration Office, based on its discretionary power, issues to long-term posted workers, residence permits type B, valid five years.

Such authorisation can be considered on the one hand as a warning light and on the other hand as an opportunity. Although a very particular case, it merits assessment in the light of the national legislation and EU law.

Pursuant to Article 9.6° Roya