This paper analyses the complexity of regulating the activities of small traders at the Grand Marché in Ouagadougou, Burkina Faso. Markets in Africa are places where small-scale trading takes place par excellence, and the traders who work there are generally considered to be self-employed. The plurality of regulations governing commercial activity observed there seems to be particularly conducive to such an analysis. We examine these complexities within the theoretical framework of “social regulation” as well as that of “normative pluralism,” which encompasses both official and practical norms. We show that the work of traders is regulated both by norms issued by the Régie Autonome de Gestion des Équipements Marchands (Independent Management Board for Commercial Facilities) – an official structure – and by traders’ own practical norms, which have both collective and individual aspects to them. The complexities of the relationship between these official and practical norms lie in the fact that sometimes they are not always articulated and may both co-exist and contradict each other.