My name ｉｓ "今はまだ無い。".
I have one doubt.
In what meaning are you using the word "volunteer"?
In general, the Japanese is using this word in a simple meaning
"Person who works free of charge".
The obligation is thin there.
Moreover, there is a person who thinks that there is a limit
in the responsibility that can be assumed, too.
Is there a difference in your recognition?