A/HRC/21/26 strengthen monitoring, complaint and other safeguard procedures in accordance with international norms and standards. 58. Competent and well-trained professionals working with children are a necessary requirement for the effective functioning of a juvenile justice system which is sensitive towards, and takes into account, the specific needs of children. Clear international standards exist for the qualification, selection, recruitment, training and remuneration of personnel. States should ensure the full implementation of these obligations. 18