Could you watch the baby now?
I'm still sleepy. Can't I watch the baby tomorrow?
No, I want you to watch the baby right now before it takes a nap
It is wrong to force people to do things if they are tired. You can watch the baby alone if you need to watch it right now.
You have no compassion, do what I want or you're fired.
You can't really fire someone for not watching a baby, as that isn't my job. You shouldn't force people to do things when they can't do them at the moment.