Most big companies operating in sectors at high risk of labour abuses are failing to meet human rights standards set by the United Nations, according to an analysis of 100 major companies published on Monday. From tackling child labour to ensuring equal treatment for women, U.N. principles require all businesses prove they are committed to human rights and treat workers fairly. But an analysis of more than 100 major apparel, agricultural and extraction firms by the Corporate Human Rights Benchmark (CHRB), a British charity, found many had little to show for.