Denver Health Overtime Hours

Does anybody know what Denver Health's policy is on overtime hours for RNs? Is it allowed, and if so, are there a limited number of hours per week, etc.; do the policies vary by department; is the overtime policy only invoked in desperate situations, etc?

I am hoping to work there next year and was also hoping to work 45-48 hours per week for a while. Just wondering if this is reasonable to hope for.

Thanks in advance.