the shop floor        
noun [ S ] uk/ˌʃɒp ˈflɔːr/ us/ˌʃɑːp ˈflɔːr/
 (工厂的)普通工人;工作车间
the ordinary workers in a factory, or the place where they work
 on the shop floor 在普通工人当中
among the ordinary workers at a factory
  There are worries on the shop floor about job security. 基层工人非常担心自己的工作是否有保障。