I think the reason why doctors work hellish shifts is different than the reason why nurses work hellish shifts.
Medical schools traditionally require docs-in-training to work insanely long shifts to “toughen them up”. It ensures that only people who really want to be doctors get through. (It also tends to dissuade undesirable people- women who have or want kids, for example- from becoming doctors. IMHO, YMMV.)
Doctors are generally not employees of the hospital: they are free agents, and hospitals cater to them shamelessly because doctors bring patients; patients bring money. At my hospital, there is an official policy that whenever a doctor screams at a nurse, other nurses may stand silently behind the nurse who is being berated to show support, but no nurse may “talk back” to a doctor or she will be fired. We’ve had doctors who throw bloody body parts and surgical instruments around in the OR during fits of rage; those doctors receive no warnings even though throwing a bloody scalpel is clearly a threat to the lives of the nurses present.
Nurses are hospital employees. Hospitals emphasize that nurses are their single largest cost. (Well, duh- you can’t have a hospital without nurses, and the majority of care received in hospitals is nursing care.) Hospitals are always trying to cut back on the cost of nursing.
Having nurses work long shifts is one way. In some hospitals, nurses work 8-hour shifts. Around here, nurses work 12. (Once you give report to the oncoming shift, do your paperwork, and catch up on the work you didn’t have time to do during your shift, this equals about 14 hours or more.) Having only two shifts per 24-hour period saves the hospital scads of money.
Another way hospitals save money is by increasing each nurse’s patient load. When I worked in ICU, my hospital decided to give each nurse 3 critically ill patients instead of the usual 2, promising to provide plenty of (unlicensed) aides to help take up the slack. They also eliminated all of the phlebotomists, most of the x-ray techs, all of the EKG techs, most of the central supply staff, and others, reasoning “Now that the ICU nurses have all of these aides to help them, they’ll have plenty of time to do those jobs, as well”. Needless to say, those promised nurses’ aids never materialized.
Human error occurs. I just read my RN Update, which lists every nurse in the state who has been reprimanded by the state board; two close friends of mine have had their licenses suspended. Nurses (and doctors too, I’m sure) live in fear of making a mistake. We try so very hard not to make mistakes, but sometimes the system or our own weariness or our own carelessness defeats us. It’s a scary job.