Upon arrival in a new location, migrants collect information from a variety of sources: their own resources, job postings, and informal networks of friends and neighbors, including those who have moved to the destination from the same place of origin. The information flow seems particularly strong among those who have originated from the same place.
The success of previous migrants in the destination market affects perceptions of the economic value of migration, which, in turn, influences the decision of others to move and, more directly, the labor-market performance of those who move. To assess empirically these nonmarket interactions, the authors of this study use micro data of employment status from Bangkok, Thailand, to examine whether the population size (the relative share of migrants from a particular area in a
population) and efficiency (the estimated employment probability among a group of migrants from a particular area) of previous migrants affect employment prospects of recent migrants from the same area.