you cannot work off campus without INS autorization, which is reflected
on your SSN. If you do and you get caught, you get deported. You wil
have to apply for authorization after first year, based on unforseen
circumstances and severe economic hardship as a result of these
circumstances. So, if you are from a civilized country, your chances of
getting this work permit are small.
You can work on campus for 20
hours a week during semester, and full-time during holidays and summer
break. Even in the first year.
http://international.missouri.edu/is...ts/employment/