A Chinese construction group [China Railway Engineering (CREC)] is inflicting "unacceptable" working conditions on its Congolese labourers in the Democratic Republic of Congo, a leading African human rights group [African Association for the Defence of Human Rights] charged. It said workers were employed without contracts, hours were not respected, salaries were paid at less than the official rate, people were unfairly fired and there was no security and little medical care... No one from Crec was available to comment but China's ambassador...Wu Zexian, questioned the credibility of Asadho's report. …The report also cited the sacking of two employees for not carrying out an instruction given in Mandarin…