This study was designed to establish a caseload standard for child welfare workers. Understanding reasonable workload expectations for child welfare workers is a cornerstone of quality service provision and the recruitment and retention of qualified workers. Because of the analytic complexity of this question, qualitative and quantitative methods were used. The mixed methods included focus group sessions involving 60 Children, Youth and Families (CYF) workers, analysis of more than 16,000 CYF cases maintained by the CYF information management system, and job shadowing of 34 randomly selected CYF workers for an aggregate of 5,600 work hours. The study was conducted on the CYF located in Pittsburgh. Results indicated that, on average, some CYF workers had been assigned twice as many cases as the 16 to 17 per month suggested as reasonable by the present findings.