Alberta B. Johnston joined the Oregon Extension Service as a Home Management Specialist in 1963. Johnston's primary focus was Home Economics and became involved in different areas of the home, including consumption and finances. She was also involved with the Mini College program for home makers. Johnston later served as the Extension Area Supervisor for Northwestern Oregon (1975), Assistant Director for County Programs (1979), Associate Director (1982), and Deputy Director of the Extension Service (1987). She retired in 1990 with an Emeritus appointment. Johnston was affiliated with several professional associations, such as the Oregon Home Economics Association, Personal Finance Advisory Committee, Northwest Adult Education Association and the United States Adult Association.