Working shit

My staff is on a loooooooooong leave, my another colleague is going outstation again!!

I'm gonna carry the workload of this 2 staff.

I don't know what the boss is thinking, to cover duty for 1 staff is fair enough, as it is in my department.

But now, I need to cover for another colleague, which infact, are not in my department, total different jobscope, I have no idea of what are those details, and not forgetting myself does have my own fair share of work.

So 1 man = 3 workload in total.