CRC/C/15/Add.112 page 9 D.8. Special protection measures 29. Although the Committee is aware of the measures taken by the State party, in particular by INI, it remains concerned about the living conditions of children belonging to indigenous groups, especially with regard to the full enjoyment of all the rights enshrined in the Convention. In the light of articles 2 and 30 of the Convention, the Committee recommends that the State party take effective measures to protect children belonging to indigenous groups against discrimination and to guarantee their enjoyment of all the rights recognized by the Convention on the Rights of the Child. 30. While welcoming the fact that the State partys legislation complies with international labour standards and the measures taken for the eradication of child labour, the Committee is still concerned that economic exploitation remains one of the major problems affecting children in the State party. The Committee is particularly concerned that the State party, in its second periodic report, categorized only street children as working children. The Committee is of the opinion that this misconception affects the scope and perception of this social phenomenon. In this regard, the Committee is particularly concerned that a large number of children are still involved in labour activities, especially in the informal sector and in agriculture. The Committee expresses its concern at the insufficient law enforcement and the lack of adequate monitoring mechanisms to address this situation. In light of, inter alia, articles 3 and 32 of the Convention, the Committee recommends that the State party reconsider its position regarding the issue of child labour. The situation of children involved in hazardous labour, especially in the informal sector, deserves special attention. Furthermore, the Committee recommends that child labour laws should be enforced, the labour inspectorates strengthened and penalties imposed in cases of violation. The Committee recommends that the State party consider seeking technical assistance from the International Labour Organizations International Programme for the Elimination of Child Labour (IPEC). The Committee encourages the State party to consider ratifying ILO Convention (No 138) regarding Minimum Age for Admission to Employment (1973) and the new ILO Convention (No 182) concerning the Prohibition and Immediate Action for the Elimination of the Worst Forms of Child Labour (1999). 31. In view of the assessment and recommendations made by the Special Rapporteur on the sale of children, child prostitution and child pornography (see E/CN.4/1998/101/Add.2) regarding the situation of the sexual exploitation of children in Mexico, the Committee welcomes the measures taken by the State party to combat this phenomenon, in particular, the establishment of the Inter-institutional Commission to Eradicate the Sexual Exploitation of Children. In this regard, and in the light of article 34 and other related articles of the Convention, the Committee recommends that the State party take all effective measures to implement the recommendations made by the Special Rapporteur following her visit to Mexico. In particular, the Committee recommends that the State party conduct a study on the issue of commercial sexual exploitation of children with a view to designing and implementing appropriate policies and measures, including care and rehabilitation; and that it reinforce its legislation, including punishment against perpetrators; and that it conduct awareness raising campaigns on this issue.