This article surveys 200 employers and 189 natives in enterprises which hire foreign workers and 141 employers and 110 natives in enterprises which do not hire foreign workers in the manufacturing industry of Kaohsiung County to explore their perception about the impact of hiring foreign workers. The major results reveal that whether enterprises hire foreign workers or not and between employers and employees of enterprises which hire foreign workers have perception differentials in most indicators of industrial upgradation, natives' employment, consumption, public order and public health.