By the early 1990s, there were already important concentrations of migrant workers in Brunei Darussalam, Hong Kong Special Administrative Region of China, Japan, Malaysia and Singapore, originating mostly in Asia.
截至1990年代初，移徙工人重点集中在文莱达鲁萨兰国、中国香港特别行政区、日本、马来西亚和新加坡，来源地主要为亚洲。