Working while on holiday visa in the Gulf during the notice period, don't

PSA because someone at my base nearly did this. Between resigning from one Gulf carrier and joining another, your visa status changes and there are rules about working during the transition. Don't take informal work, don't overstay the cancellation period, and make sure the new employer's visa process is started before the old one is cancelled. HR at both airlines deal with this daily. Ask them, not the group chat.