Read the clauses on contract termination. It can be terminated without cause at any time with four months notice.
That was always there, so nothing has changed in the written form. However the "caring employer" is no more.
I was chatting to a GM last night who will be massively affected by the huge crew losses, he was oblivious to the fact that so many had resigned. He was also of the impression that crews would love Riyadh once they moved there, I asked him how many of his staff would resign if they were moved to Riyadh, once he thought of that he changed the subject.
With the opening of the new terminal and the planned increase in operations, the loss of 160 mainly Captains plus the annual retirements, next summer looks as if it will be a unmitigated disaster.