Between 1986 and 1988, the number of full-time equivalent (FTE) staff employed in specialty mental health organizations in the United States increased 7 percent, from 494,515 to 531,067. Much of this increase could probably be attributed to the increase in number of mental health organizations during this period, from 4,747 to 4,930. With the exception of State mental hospitals and VA psychiatric organizations, all of the other types of mental health organizations showed varying amounts of increase in FTE staff with the most notable gains being reported by private psychiatric hospitals, residential treatment centers for emotionally disturbed children, and multiservice mental health organizations. Of the 531,067 FTE staff employed in mental health organizations in 1988, 72 percent were classified as patient care staff and 28 percent as administrative and support staff. State mental hospitals and VA psychiatric organizations had slightly higher percentages of administrative and support staff (35 and 32 percent, respectively). Seventy percent or more of the staff employed in the various types of specialty mental health organizations in 1988 worked on a full-time basis, the two exceptions being freestanding psychiatric outpatient clinics and non-Federal general hospital psychiatric services in which full-time staff represented only 52 percent and 69 percent, respectively, of all staff. For the most part, the majority (50 percent or more) of each of the staff disciplines employed in mental health organizations worked on a full-time basis. The major exceptions were psychiatrists and other physicians, most of whom worked either on a part-time or trainee basis.