In the US it's called Pay For Training
In the US it's called PFT. It's very controversial.
I'm sympathetic to out-of-work pilots in a tough job market, but the only effect of pilots paying for their training is to continually depress the already subterranean wage level.
This is good for no one.
I'll say one more thing and then I'll be finished: Professional pilots do not "volunteer" their skill and experitise.
If you're already employed and you volunteer your time to a non-profit organization, that's one thing. If you give away your time to somebody that's making money for himself, that's quite another.
Peace.