The primary function of Ontario child protection agencies is to determine if children have been maltreated, or if they are at risk of maltreatment, and then to provide services to mitigate the risk in cases where child protection concerns exist. These child protection agencies across the province carry out the various components of their work in different ways. Some agencies use the generic model of service delivery in which one worker takes primary responsibility for a case from the investigation that follows the initial referral and throughout any ongoing services that are provided. Others use the specialized model in which two or more workers each assume responsibility for various components of the investigation and ongoing aspects of the services.