One of the most rewarding and important careers available today is nursing. Nurses are often hired by hospitals, medical groups, nursing homes, and other healthcare providers to help provide care to those in need. Nurses are frequently high in demand by employers and the field enjoys a low unemployment rate.For those that are currently nurses, or would like to become a nurse in the future, joining a professional organization could be a great option. There are five nursing professional organizations that nurses should know about.