Everyone resigned

Bad news to my boss...in this week suddenly got 4 colleagues resigned. And 3 of them last day by end of this month or early of January. Suddenly the whole support department no more people. Don't know how is my boss feeling...a bit pity him but then is himself made us how desperate to leave the company. Sigh...sooner my office will become extremely quiet. Envy my colleagues who can resign, don't know till when is my turn???