Admission decision time frame
Undergraduate: EMU typically notifies undergraduate students of their admission decision within 7-10 business days after we have received ALL of the required documents for admission. However, it can take up to 3-4 weeks during the busiest times of the year. You're welcome to request a status check by sending e-mail to undergraduate.admissions@emich.edu or by calling 800-GO-TO-EMU.
Graduate: Admission decisions for gradaute programs are made by the academic department that houses the program to which you have applied. Once the department has made the decision, the Office of Admissions processes the decision and then notifies you by mail. A Graduate Recommendation Form will be included with the letter letting you know what your admission status is and giving you departmental contact information.
Depending on the program to which you have applied, it may take a while before a decision is made. Some departments review all appliations for a specific term on a certain date, while others review their applications once a month or even several times a week. You may contact the Office of Admissions to check on the status of your application: 1-800-GO-TO-EMU (800-468-6368) or 734-487-3060; you may also check with the academic department to find out when a decision will be made.
Students are notified of their admission decision by mail. In addition, students who are admitted less than one month prior to the start of their first semester at EMU are notified of their admission by phone.

Links:
http://www.emich.edu/academics/programs/gr.htm
http://www.emich.edu/admissions/