A/HRC/28/35 46. The Committee on the Elimination of Discrimination against Women has noted that States parties must take special measures to ensure that women with disabilities have equal access to health services and social security. 61 Human rights bodies have further called on States to undertake studies and research in order to identify the situation and specific requirements in particular of women with disabilities, with a view to elaborating and adopting social protection strategies to promote their autonomy and full participation in society, and to combat violence against women. 62 47. National social protection floors aiming at the inclusion and participation of persons with disabilities could play a critical role in enabling States to comply with their obligations regarding the rights of persons with disabilities. In 87 countries, non-contributory benefits for persons with disabilities enable them to have a minimum level of income security.63 D. Informal workers 48. People working in the informal sector of the economy often lack social protection and, as noted above, that affects women in particular. Traditionally, States have privileged the establishment of contributory systems with the objective of achieving universal coverage of the formal sector. 49. Human rights treaty bodies have called upon States parties to take effective measures to ensure that informal workers are able to exercise their labour rights and their right to social security without discrimination. 64 Obligations to extend social security to informal workers are in line with the objective of ILO Recommendation 202. Social security systems and their components should be universal, based on social solidarity, aiming at social inclusion, including persons in the informal economy. 65 E. Non-nationals 50. Under international human rights law, States should progressively ensure all economic, social and cultural rights including the right to social security, for all individuals within their territories, providing specific protection for disadvantaged and vulnerable individuals and groups.66 The International Convention on the Protection and Rights of All Migrant Workers and Members of Their Families regulates the rights of migrant workers and members of their families including the rights to social security (art. 27), health (art. 28) and education (art. 30). Migrant workers also enjoy all the rights contained under 61 62 63 64 65 66 14 Committee on the Elimination of Discrimination against Women, general recommendation No. 18 (1991) on disabled women. See, for example, Committee on the Rights of Persons with Disabilities, concluding observations on Tunisia, CRPD/C/TUN/CO/1, and Spain, CRPD/C/ESP/CO/1. ILO, World Social Protection Report, p. xxiii. See, e.g., Committee on the Economic, Social and Cultural Rights, concluding observations on Paraguay, E/C.12/PRY/CO/3; Committee on the Elimination of Discrimination against Women, concluding observations on Bosnia and Herzegovina, CEDAW/C/BIH/CO/4-5, and on Djibouti, CEDAW/C/DJI/CO/1-3. The Guiding Principles on Extreme Poverty and Human Rights explicitly call on States to “take specific measures to ensure that persons living in poverty, in particular women and those working in the informal economy, have access to social security benefits, including social pensions, which are sufficient to ensure an adequate standard of living and access to health care for them and their families” (principle 86 (c)). See ILO, Social Security for All, p. 4. General comment No. 19, para. 31.