3. Any migrant worker or member of his or her family who is detained in a State of transit or in a State of employment for violation of provisions relating to migration shall be held, in so far as practicable, separately from convicted persons or persons detained pending trial. 4. During any period of imprisonment in pursuance of a sentence imposed by a court of law, the essential aim of the treatment of a migrant worker or a member of his or her family shall be his or her reformation and social rehabilitation. Juvenile offenders shall be separated from adults and be accorded treatment appropriate to their age and legal status. 5. During detention or imprisonment, migrant workers and members of their families shall enjoy the same rights as nationals to visits by members of their families. 6. Whenever a migrant worker is deprived of his or her liberty, the competent authorities of the State concerned shall pay attention to the problems that may be posed for members of his or her family, in particular for spouses and minor children. 7. Migrant workers and members of their families who are subjected to any form of detention or imprisonment in accordance with the law in force in the State of employment or in the State of transit shall enjoy the same rights as nationals of those States who are in the same situation. 8. If a migrant worker or a member of his or her family is detained for the purpose of verifying any infraction of provisions related to migration, he or she shall not bear any costs arising therefrom. Article 18 1. Migrant workers and members of their families shall have the right to equality with nationals of the State concerned before the courts and tribunals. In the determination of any criminal charge against them or of their rights and obligations in a suit of law, they shall be entitled to a fair and public hearing by a competent, independent and impartial tribunal established by law. 2. Migrant workers and members of their families who are charged with a criminal offence shall have the right to be presumed innocent until proven guilty according to law. 114