I agree with Heather about looking into the Americans With Disabilities Act. The American Diabetes Assoc may have further help for you. Check out their pages at:
http://www.diabetes.org/community/advocacy/default.jsp http://www.diabetes.org/community/ad...rimination.jsp
I don't know how far you're willing to go with this, but lawsuits have been filed and won that allow T1 diabetics to now serve as law enforcement officers and firefighters. That sets a good precedent for you.
David