"arrearage" ... "decree" - no
What do you think it is for, just what is says, CHILD SUPPORT
Yes, he does. He is still a father, he has a child, and that child needs support.
You still have to support her until she is emancipated or the law or child support agreement says stop.
Child support is paid as long as the child is a minor, get emancipated or when the child support agreement says so.
You pay child support until the judge says you do not have to pay.
When the child is adopted or have reached 18 or 21 depending on what the child support order says and state law. Even when it ends at 18 it can be possible to ask for support until the child is 21 and finish college.
If you're in the US... A child saying he is emancipated means nothing (I can say I'm God, but that doesn't mean I am :). If the child actually is legally emancipated, then child support ceases.
If you are a father, you have to pay child support if the court says so. The age of the father does not matter.
It means exactly what it says - the court will revisit the issue of child support if/when the obligor becomes employed.
Only if the order for support says they do. In California it does by law. see links
Back support is owed the obligee parent, however any continuing support can go to the child.
Depends on your state laws and what your child support agreement says but you have to pay at least until the child is 18.