The data were collected from work diaries completed by 2,400 probation staff including senior officers, main-grade officers, and probation service assistants. The results showed that the officers spent approximately 23 percent of their work-week on supervision of offenders and other court orders. The rest of their time was divided among duties including after-care, preparation of court reports, and court duty. Although the general pattern of working hours has changed little since a similar survey was conducted in 1977, the findings do indicate that officers spend more time per case, including report preparation. Since 1977, officers have also spent more time on non-casework activities, including crime prevention, victim support, and bail assistance. The workload weighting information derived from the survey, combined with projections of expected workloads for a given time, will be used to estimate probation service staff needs. 2 references