Over the course of the 20th century, American domestic service changed from an occupation with a hierarchical, top-down structure to one in which relationships were more negotiated. Many forces shaped this transformation: shifts in women's role in society, both at home and in the work force; changes in immigration laws and immigrant populations; and the politicization of the occupation. Moreover, domestic workers themselves took advantage of the resulting circumstances to demand better treatment and a say in their working conditions.