...the UN Committee on Economic, Social and Cultural Rights published its concluding observations on...Mexico...[T]he Committee expressed its concern about violations of economic, social and cultural rights, and particularly, about violations of labour rights...meeting...a number of concerns expressed by FIDH in a report of April...the Committee...denounces the...poor working conditions, especially as regards women, indigenous workers and workers from the informal sector...The Committee...recommends the prohibition...of the «practice of employers in the maquiladora industry to require women to present non-pregnancy certificates in order to be hired or to avoid being dismissed»...the Committee [is concerned] about «...child labour» and about the «poor and hazardous conditions» in which they often work...the Committee denounces «the severe restrictions (in federal law) on the right to form and join trade unions».