It is no doubt that industrial zones leverage economic development in many countries. However, migrant workers who are main labor forces in industrial zones faced to some vulnerable situations easily related to both working and non-working environment. Base on the survey of 190 migrant workers in two industrial zones in Bac Ninh, this study found that labor sustainability is threaten by going on the foot loose of traditional development of industrial zones. Migrant workers in these zones faced a trade-off between accepting a hard life and accumulating capitals as well as experiences for an expected better one afterward. They are going to be circular and leave these zones after staying several years on their works.