For teacher, flexibility and compatibility level remains same

Work Inflexibility.

To any teacher, factors like flexibility and compatibility level at work remains to be a big question still. Being absent for few hours or a day, is absolutely uncalled for. Whereas in any other work place, taking sick leave when you're unexpectedly sick on a given day, could be workable. But, such a privilege isn't conferred to classroom teachers. He/she cannot truly afford to miss classes, without prior notice. It is intensely difficult for them to be absent at work. It would have an adverse effect at school or college, in terms of class schedule and students' expectations.

On the other hand, the substitute teacher may not be able to deliver much, without preparation in lesser time on the related subjects, replacing the deceased teacher.

Quite sadly, the hardest and most common thing teachers(who are ill) would do in this case, is to pull themselves up to work, finish their own tasks with much forbearance, and then come back home and attend to themselves.

Teachers strive to run the race, amidst the odds, which is inexplicably admirable.