Nurses comprise the largest group of professionals in hospitals, and their knowledge, skills and experiences are an important asset. At hospitals, nursing departments have greater decision-making power than other departments due to their greater workforce (Sung, Lee, Jeong, Park, & Kim, 2014). The status and responsibility of the nursing department are important because nurses play a direct role in the provision of medical services and an important role in improving the performance of hospitals (Sung, Jeong, Park, & Lee, 2017). Additionally, in relation to power, a leader of a nursing group can make a statistically significant difference in the group's ability to actualize their power capacity (Sieloff, 2004). As such, the influence of individual nurses could change depending on the power of the nursing department. A survey of the status of hospital nursing staff placement in 2014 reported that among 201 hospitals nationwide, 20 (10.0%) used job titles such as nursing vice president, nursing executive director, chief of nursing, director for nursing operations and director of nursing bureau; 159 (79.1%) used the title head of nursing department ("bujang"); and 22 (10.9%) used the title deputy head of nursing ("chajang"), indicating that the titles of chief nursing officers vary across hospitals (Hospital Nurses Association, 2014). In addition, the position and affiliation of nursing departments in the hospital organizational chart also differ across hospitals. Therefore, it is necessary to evaluate the current status of the power of nursing departments.