19 1. Self-employed workers, as defined in article 2, paragraph 2 (h), of the pre sent Convention , shall be entitled to the rights provided for in part IV with the exception of those rights which are exclusively applicable to workers having a contract of employment. 2. Without prejudice to articles 52 and 79 of the present Convention, the termination of the economic activity of the self-employed workers shall not in itself imply the withdrawal of the authorization for them or for the members of their families to stay or to engage in a remunerated activity in the State of employment except where the authorization of residence is expressly dependent upon the specific remunerated activity for which they were admitted. Part VI: Promotion of sound, equitable, humane and lawful conditions in connection with international migration of workers and members of their families Article 64 1. Without prejudice to article 79 of the present Convention, the States Parties concerned shall as appropriate consult and co-operate with a view to promoting sound, equitable and humane conditions in connection with international migration of workers and members of their families. 2. In this respect, due regard shall be paid not only to labour needs and resources, but also to the social, economic, cultural and other needs of migrant workers and members of their families involved, as well as to the consequences of such migration for the communities concerned. Article 65 1. States Parties shall maintain appropriate services to deal with questions concerning international migration of workers and members of their families. Their functions shall include, inter alia : (a) The formulation and implementation of policies regarding such migration; (b) An exchange of information. consultation and co-operation with the competent authorities of other States Parties involved in such migration; (c) The provision of appropriate information, particularly to employers, workers and their organizations on policies, laws and regulations relating to migration and employment, on agreements concluded with other States concerning migration and on other relevant matters; (d) The provision of information and appropriate assistance to migrant workers and members of their families regarding requisite authorizations and formalities and arrangements for departure, travel, arrival, stay, remunerated activities, exit and return, as well as on conditions of work and life in the State of employment and on customs, currency, tax and other relevant laws and regulations. 2. States Parties shall facilitate as appropriate the provision of adequate consular and other services that are necessary to meet the social, cultural and other needs of migrant workers and members of their families. Article 66 1. Subject to paragraph 2 of the present article, the right to undertake operations with a view to the recruitment of workers for employment in another State shall be restricted to: ( a ) Public services or bodies of the State in which such operations take place; ( b ) Public services or bodies of the State of employment on the basis of agreement between the States concerned;