Women migrant workers from developing countries engage in paid employment in countries where they are not citizens. While women have traditionally been considered companions to their husbands in the migratory process, most adult migrant women today are employed in their own right. In 2017, of the 168 million migrant workers, over 68 million were women. The increase in proportion of women migrant workers since the early twentieth century is often referred to as the "feminization of migration".