An emergency room nurse makes pretty good money at $33.00 per hour or around $70,000.00 to $100,000.00 per year depending on what hospital the nurse works in and if they work more overtime hours.
Being an emergency room nurse is a very demanding and stressful job and really they do not get enough pay for what they do.
The surgeons in an emergency room make much more than a standard emergency room nurse but still they don't even earn enough money what they do.
As a nurse you are sometimes on call all the time which means if you're needed at the hospital because they're backed up with emergency situations then you could be called in.
My aunt used to work as an ER nurse and sometimes she'd have to go back to work even when she had days off or when she got home after her shift.
If they're understaffed during an increase of emergency room visits then you might have to go back into work.