What happens to my residence if my single-permit job ends in Belgium?

Because work and residence are combined, the end of your employment affects your stay. The Immigration Office indicates that if the region terminates the work authorisation, the residence permit is automatically terminated around 90 days after the end of the work, unless the Immigration Office intervenes earlier.

During such a period, a worker may hold a temporary residence document without labour-market access. The roughly 90-day window is useful for looking for a new employer who can file a fresh single-permit request, so acting quickly is important if your job ends.