Syftet med denna studie har varit att undersöka hur företrädare inom kriminalvården och socialtjänsten arbetar med barn som har en mamma på anstalt samt vad samverkan mellan myndigheterna har för funktion. Vi har valt att intervjua fyra professionella som arbetar inom kriminalvården och fyra professionella som arbetar inom socialtjänsten. Resultatet visar att myndigheternas olika lagstiftningar, utbildningar, kunskap om varandras verksamheter, uppdrag samt olika synsätt på barnperspektivet försvårar samverkan mellan myndigheterna. / The purpose of this study is to examine social services and prison services works with children who have a mother in prison, and how collaboration between the two different authorities function. We chose to interview four professional working in prisons and four professionals in the social services. The thesis results show that there often is a collision between the correctional authority and social service that both have different perspectives when it comes to children whose mothers are in prison. There are several issues to this interaction. We concluded that because of the two different legal authorities, training, knowledge of each other's activities and assignments, there are shortcomings in cooperation between authorities. The professionals are aware of the shortcomings but nobody is doing anything about it.