A/58/275 in humiliating and degrading jobs. However, such efforts have at times been unsuccessful if they were not accompanied by agreements with the States of destination, especially where there was a strong sex industry or a strong demand for unskilled labour. 30. The Special Rapporteur has observed a need to give legal recognition to the work done by migrant domestic workers. She has emphasized that it is essential that workers in the informal sector, as well as their children, have access to social security, education, health-care services, legal aid, counselling and socio-economic benefits. Pre-departure information, mechanisms for monitoring and accessible complaint mechanisms are also necessary to ensure adequate protection from and prevention of abuses. The Special Rapporteur is particularly concerned about the existence in some countries of mail-order bride agencies and/or web sites and about the vulnerability of minors who have recourse to them, thereby becoming vulnerable to exploitation and trafficking. Special measures should be taken to protect persons against these risks. 31. Moreover, the Special Rapporteur emphasizes that efforts must be made to combat corruption and punish abusive employers. The first step in this direction is an inclusive and detailed employment contract that is written in a language that the migrant can understand. It should contain information with respect to the work site, the duration of the contract, the monthly salary, the working hours and the conditions of stay (including residency documents and work permit, suitable and sanitary living quarters, adequate food and medical services). It should also have a provision giving the employee the right to terminate the contract under specified conditions, as well as information on where to find assistance in case of problems. 4. National migration administrations 32. The Special Rapporteur notes that corruption often permeates migration administrations, resulting in the complete lack of protection for migrants and impunity for those responsible for violating their rights. The Special Rapporteur has received various testimonies of extortion and abuse of migrants, especially women, by officials. Moreover, she has frequently observed that ratified conventions are not always translated into national legislation. States must take into account the complex and comprehensive nature of corruption at all levels. 33. The Special Rapporteur has emphasized the need to provide adequate training and resources to the national migration administrations, border police and law enforcement agencies and officials dealing with migration matters. Instruction should go beyond theoretical teaching of national and international legislative provisions to action-oriented training. It should also include modules to raise awareness on the concrete problems faced by undocumented migrants and their vulnerability to human rights violations, as well as practical training in investigating criminal groups involved in smuggling and trafficking. Responsible officials and those dealing with migrants should also be trained to give migrants practical guidance and information. The Special Rapporteur recommends that they be sensitized with respect to the social, cultural and psychological difficulties encountered by migrants and to the human dimension of the migration phenomenon. 13