An overview of the use of part-time teachers in adult and postsecondary education is presented. It is stated that adult and postsecondary institutions have found that the extensive use of part-time teachers helps to fulfill the needs for maintaining current, relevant training programs in new and emerging occupations; for providing training programs on an occasional, on-demand basis; and for offering ongoing programs for which low enrollments are anticipated. Topics covered in this digest include: (1) trends in and statistics on the use of part-time teachers; (2) benefits of part-time teaching for the individual and for the institution; (3) employment characteristics and training needs of part-time teachers; and (4) approaches to strengthening the quality of part-time teachers including orientation, professional development, and evaluation and supervision. This digest includes a five-item bibliography of references, two of which are available from the Educational Resources Information Center (ERIC) system. (DC)