My T works 15 hours a week in her private practice. So she probably has about 12 clients(?), some of whom are doing DBT (and so need phone contact as part of their treatment). The rest of the time, she works as a consultant for a DBT service. Lots of that job seems to be management/development meetings but I think she has some clients (and therefore more phone contact) there too. She also runs her business (other Ts work in her private practice), is doing a further specialist qualification for her consultant job, has a 2 year old child at home and somehow sustains a marriage and a busy social life.