Student is eligible as soon he or she is in F-1 status; no academic-year waiting period. Available only while student is in F-1 status, before completion of the educational objective
Once authorized to work as an intern with an international organization, an F-1 student can work up to 20 hours per week while school is in session. A student can work full-time during holidays or school vacation. If working during fall or spring semester, student must maintain full academic status.
Must have a written offer of employment from a qualifying international organization; In all likelihood, should not be for a position which would qualify individual for G status.
Must apply for EAD from USCIS, and receive EAD before employment begins.
Notes:
The employment authorization is automatically terminated whenever you fail to maintain immigration status;
Authorization to engage in practical training employment is automatically terminated when you transfer to another school or begins study at another educational level;
Post office does not forward mail form US CIS so please make sure you list the correct address on the application.