I worked for the Marriott Courtyard Hotel and hired as hotel engineering.
The hotel security guard will be going into her vacation and no one to cover her. My boss ( engineering chief) has schedule me to cover the grave yard shift as Security from 10 pm - 6 am without my authorization and hasnt even discuss it with me and still wants me to come in at 9:30 am as engineer. Where are my sleeping hours?
First of all i dont feel comfortable working a position with no kind of training, I dont posesed a Security Guard Card Certification ( required for this position), and is not in my job description.
Can I refused to work this position without getting fired, what can I do?

