The novel is set in the world of the department store, an innovative development in mid-nineteenth century retail sales. Zola models his store after Le Bon Marché, which consolidated under one roof many of the goods hitherto sold in separate shops. The narrative details many of Le Bon Marché's innovations, including its mail-order business, its system of commissions, its in-house staff commissary, and its methods of receiving and retailing goods.