has been granted a license to practice as a registered nurse in at least one State. (5) Shift The term shift means a scheduled set of hours or duty period to be worked at a participating hospital. (6) Unit The term unit means, with respect to a hospital, an organizational department or separate geographic area of a hospital, including a burn unit, a labor and delivery room, a post-anesthesia service area, an emergency department, an operating room, a pediatric unit, a stepdown or intermediate care unit, a specialty care unit, a telemetry unit, a general medical care unit, a subacute care unit, and a transitional inpatient care unit. .