Pie pal, this being asked to do 2 persons jobs has cropped up over many years. if you can do 2 peoples jobs at the same time, then there wasn't 2 jobs in the 1st place.
That's one way of looking at it, but it doesn't apply in this case. Nurses are being forced to provide second rate care because they can often only do half the job. That's why so many of them are leaving the profession.