比较详细的OPT 和OPT extension document，挺清楚的# JobHunting - 待字闺中
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OPT这东西规则是USCIS定的，是个national policy，各个学校应该是一样的规则，差
别只是在于document解释得好坏。
这个document解释OPT和OPT extension 挺详细的：
http://www2.ku.edu/~issfacts/PDF/f1Forms/OPT_Stem.pdf
1） 明确说了，during OPT extension, are allowed to volunteer, incidental to their status; however,
volunteer work does not count as employment for the purpose of maintaining
F-1 status (unlike during the initial 12 months of OPT when volunteer work
does count as employment)
2）明确说了，A student may change employers during the 17-month extension,
however, the new employer must also be an E-Verify employer and the job must
be directly related to the student’s major. Students must report the
change in employment to international office
hope it helps.
别只是在于document解释得好坏。
这个document解释OPT和OPT extension 挺详细的：
http://www2.ku.edu/~issfacts/PDF/f1Forms/OPT_Stem.pdf
1） 明确说了，during OPT extension, are allowed to volunteer, incidental to their status; however,
volunteer work does not count as employment for the purpose of maintaining
F-1 status (unlike during the initial 12 months of OPT when volunteer work
does count as employment)
2）明确说了，A student may change employers during the 17-month extension,
however, the new employer must also be an E-Verify employer and the job must
be directly related to the student’s major. Students must report the
change in employment to international office
hope it helps.