If you have ever thought nurses have it easy working three days a week, then you have never been a nurse. Imagine taking care of several human beings who at any minute could stop breathing, heart stop beating, throw a clot, have a stroke or pulmonary embolism. You are responsible for that life while piling on the many other duties that are put on nurses.
You pull and tug on plus-lb. At any For nurses only in the day, you could be cleaning up urine, vomit, sputum, blood, stool and any and every combination of bodily fluids.
They call your manager or administration because of your lack of promptness while you are caring for your most critical patient who you just intubated because they stopped breathing. Your hospital administration has you take on extra patients so they are not sitting in the ER.