回複：I am H1 holder. it is ok for me to volunteer my service

來源: 於 2008-12-02 20:38:13 [舊帖] [給我悄悄話] 本文已被閱讀：次

You will be fine as long as you have no honorarium, wage, salary or material gain derived from these activities. Reimbursement for transportation and reasonable living expenses is permissible.