Staffing patterns in 123 sheltered workshops in New York, New Jersey, and Pennsylvania are described through measures of professional density, and are related to varying organizational characteristics. Shops with no professionals serve fewer clients than those with professionals, and very little professional time is available per client. An examination of professional job titles, educational levels, and salaries reveals that only one-third of the workshops are headed by professionals. Higher educational levels make it less likely a professional will work full-time. New York has a high percentage of professionals with higher levels of education working greater amounts of time with high average salaries. High professional density was associated with high percentages of clients in evaluation, personal adjustment, and vocational rather than employment training. High professional density was also associated with: (1) workshop income sources from professional services rather than production activities; (2) lower percentages of total expenses for client wages; (3) client ages under 35, (4) mental illness disabilities, (5) very short client tenure, and (6) relatively high placement rates. (WR)