This article is third in a series of three articles addressing credentialing to appear in AAOHN Journal. The first article, “Credentialing: Concerns and Issues Affecting Occupational Health Nursing,” by Olson, Verrall, and Lundvall, appeared in the May 1997 issue [45(5):231–238]. The second article, “Certification and Occupational Health Nursing: An Historical Perspective,” by Verrall appeared in the June 1997 issue [45(6):283–289].