Going back to your previous employer

Hello,
i came to belgium 18 months ago via a single permit, a year later, i've changed job, so my new employer applied for a new single permit and was fully approved.
if i want to go back to my previous employer(the one who requested my first single permit) do i need a new application for that?
Regards
Tarik

Hello,

yes, you'll have to request a new work permit as the previous one has already been canceled.
Only 1 work permit at the same time...

Thank you very much for your quick response.