WWOOF

WWOOF
http://wwoof.net/#destination

WWOOFer Membership « WWOOF-USA
https://wwoofusa.org/wwoofer-membership/?q=_form_display
$40/per year

WWOOF JAPAN - Home
https://www.wwoofjapan.com/main/index.php?lang=en

WWOOF JAPAN - Become a WWOOFer
https://www.wwoofjapan.com/main/index.php?option=com_content&view=article&id=53&Itemid=607&lang=en
$5500yen/per year