As they seek work in developed countries, female migrants are vulnerable to exploitation and run the risk of ending up on the wrong side of the law or being targeted by migrant smugglers or human traffickers (figures on these last two are very difficult to obtain). Lim (1998) posited that population ageing and the increasing integration of native-born women into the labour maiket in many developing countries were driving the employment of migrant women as domestic woikers. This issue is still the focus of research today.