[Engineers Against Poverty's report focuses] on protecting the wages of migrant construction workers in countries of the Gulf Cooperation Council (GCC). With the Wage Protection System (WPS) failing to adequately protect vulnerable workers in the region, this paper looks beyond the countries of the GCC to examine wage protection measures in China, EU, US and Latin America... [measures] are linked by attempts to extend liability for wages beyond the immediate employer in subcontracting chains. Doing so mitigates against the ruthless aspects of the supply chain, so that workers at the bottom will still be paid even if not from their employer who sits directly above them.