This essay deals with the criteria for the employment of POWs in Italy during the Great War. It is a contribution to the current research demonstrating the close connection between civilian and military spheres during the war, including in the area of internment. This intertwining is particularly evident when one studies the wartime economic system. Although the article shows that the contribution of POWs was marginal, their work was diverse and particularly visible in certain sectors. Therefore, it is important to clarify the rules that governed their employment, and the outcomes of their work.