Unmet mental health needs are common in young children. Recent research on mental health care utilization has focussed mainly on parental perspectives. This study seeks to determine which types of behaviours exhibited by children predict the perceived need for action among both parents and daycare teachers. Parents and daycare teachers reported on problematic behaviours and psychosocial competences among 255 children three to six years of age in Germany. Participants were additionally asked if they perceived a need for action due to the child's behaviour. The results indicate that for parents, "Emotional Dysregulation," "Speech Problems," and "Health and Developmental Problems" had predictive power. For daycare teachers, "Aggressive Behaviour," "Health and Developmental Problems," and the older "Age" of children predicted the perceived need for action, whereas "Social Competence" decreased the probability for perceived need. Sensitivity towards the detection of emotional disorders should be increased to improve mental health care utilization.