I do not know about the company you work for, but where I work you would have to report it immediately to the company. The company I work for is a little lenient, and will allow someone with a dui to keep their job. However, you would be considered a non-driver and would have to take every call...
I work for a private company that has 10 or 12 hour shifts. The most hours you can work straight is 24 hours, you then have to be off for 8 hours before you can work again. The most i have done in a week is 84 hours. Typically I try to work around 60 hours a week.
I work for a private ambulance company that mostly does IFTs. I have never came across a nurse that refused to give report or allow me to look through the patient's information. However, if nurses are in a bad mood for whatever reason, I always carry company pens with me to handout to nurses...