This work investigates the socio-economic impact and systemic challenges faced by foreign migrant workers within the Japanese labor market. Hiroshi Komai, a prominent sociologist, utilizes extensive field research and statistical analysis to examine the integration of migrant populations into a society historically characterized by homogeneity. The text argues that Japan's reliance on foreign labor creates a complex tension between economic necessity and restrictive immigration policies.

Experts recognize this text as a foundational study for understanding the evolution of Japanese immigration policy during the late 20th century. Readers frequently note the academic rigor and the detailed sociological framework applied to the analysis of labor migration.