CMW/C/GC/2 consideration in all actions concerning children shall be the best interest of the child standard, as laid down in article 3, paragraph 1, of the Convention on the Rights of the Child. States parties shall ensure that children in detention are treated with humanity and respect for the inherent dignity of the human person and in an age-appropriate manner and are provided with all legal safeguards (Convention on the Rights of the Child, art. 37). States parties shall therefore provide living quarters that are suitable for children and provide adequate access to education, play and leisure facilities, and, in the case of children detained with their parents, in special family units. Children should not be separated from their parents against their will except when such separation is necessary for the best interests of the child (Convention on the Rights of the Child, art. 9, para. 1). Unaccompanied children should be appointed a legal guardian who should be entrusted with the duty to care for the child outside of detention facilities. 45. States parties must also take into consideration the special situation of women migrant workers in detention. States parties must ensure separate facilities for men and women, ensure the provision of gender-specific health care services, and also provide for the specific needs of pregnant women, breastfeeding mothers and mothers with young children. States should avoid detaining women migrant workers in the final months of pregnancy or if they are nursing. The United Nations Rules for the Treatment of Women Prisoners and Non-custodial Measures for Women Offenders (the Bangkok Rules) provide useful guidelines for States in these situations. 46. Detention can be particularly damaging to vulnerable categories of migrant workers, impacting negatively on their physical and mental health. These migrant workers and members of their families may include victims of torture, unaccompanied older persons, persons with disabilities and persons living with HIV/AIDS. Special measures should be taken to protect vulnerable people deprived of their liberty, including access to adequate health services, medication and counselling. Moreover, migrant workers with disabilities and members of their families with disabilities should be provided with “reasonable accommodation” 15 to ensure their right to enjoy their human rights and fundamental freedoms on an equal basis with others. 47. With regard to article 17, paragraph 8, the Committee considers that detention “for the purpose of verifying any infraction of provisions related to migration” covers the entire duration of administrative detention, and that, consequently, migrant workers and members of their families subjected to administrative detention shall not bear any costs arising therefrom. 48. Considering that migrant workers deprived of their liberty are in a particularly vulnerable situation due to their predicament and the uncertainty of the circumstances, the Committee is convinced of the importance of independent monitoring in preventing torture and other forms of ill-treatment and abuse. National human rights institutions, relevant civil society actors, the Office of the United Nations High Commissioner for Refugees (UNHCR), the International Committee of the Red Cross and the Office of the High Commissioner for Human Rights should have broad access to all places of detention where migrants are or may be detained. 4. Protection in expulsion proceedings 49. Article 22 of the Convention prohibits collective expulsion and provides procedural safeguards in individual expulsion proceedings with respect to both regular and irregular 15 Convention on the Rights of Persons with Disabilities, art. 2. 13