it is not because he is not an ethnic Chinese, but his job doesn’t allow him to continuously stay in Taiwan for 1 year or whatever.
南洋台灣姊妹會 TransAsia Sisters Association, Taiwan(TASAT)
http://tasat.org.tw/blog/421
台灣人權促進會 Taiwan Association for Human Rights (TAHR)
台灣國際勞工協會 Taiwan International Workers’ Association (TIWA)
http://www.tiwa.org.tw
時代力量 New Power Party
FORWARD TAIWAN 向前台灣
http://www.forwardtaiwan.com
Etc. And some other organizations in their links.
There was a westerner on this forum who worked on these issues a lot.