OBJECTIVES: To describe the time spent by care coordinators (CCs), community health workers (CHWs), and mental health workers (MHWs) on a variety of care coordination tasks in a pediatric coordinated care program for underserved children and young adults and their families. METHODS: This study was a prospective work-sampling study conducted from May through October 2017. Five CCs, 20 CHWs, and 4 MHWs were randomly sampled within working hours on weekdays using a text message-based survey to observe who the worker was interacting with (children or parent/caregiver) and the service being performed. The proportion of working time spent on a task was inferred from the percent of total samples. RESULTS: The response rates were 74% (CCs), 65% (CHWs), and 62% (MHWs). CCs allocated 41% of their time to CHW team management and 31% visiting hospitalized patients. CHWs allocated 37% of their time providing a service to the child and 26% to the caregiver. The majority of CHW time was allotted to conducting assessments, screenings, and care planning for children (20%) and caregivers (16%), followed by going to the home or clinic appointment to visit the child (10%) or caregiver (5%). MHWs allocated 16% of their time to providing a service to the child and 29% to the caregiver. The majority of time was allotted to conducting mental health assessments in children (11%) and their caregivers (19%), followed by direct services such as therapy sessions for the child (3%) or parenting skills for the caregiver (3%). CONCLUSIONS: CHWs spent a majority of their time in the field, working with patients and their families in their homes to address assessments, screenings, and care planning and accompanied patients to clinic visits. The telehealth MHW services were much more varied addressing child needs through their caregivers. CCs primarily supported the activities of CHWs in this program.