勞動市場的全球化導致各國引進外籍勞工，自1992年「就業服務法」頒佈施行後，而其中「第五章、外國人之聘僱與管理」法令讓台灣企業合法引進外勞，行政院勞動部2017年8月統計月報總計外勞人口66萬3,234人，如此龐大的勞動人口解決了企業缺工問題；而來台外勞多數是藍領階層的勞動工作者，隨著2012年起修訂3K行業 (骯髒、危險、辛苦) 外勞聘雇制度起，讓3K行業可聘雇外勞比例增加，使得在台外籍勞動人口逐年且迅速增加，讓因外勞而引發的經濟、文化、社會…等方面的衝擊更加深加劇。
勞動部2017年8月月報統計台灣失業率為3.89% (約46萬1千人)，公司企業為了節省人力成本把「引進便宜外勞」視為「解決缺工問題」的方案，進而影響本國勞動人口就業機會。且來台工作外籍勞工可能會因受其他外勞或雇主的誘惑下，誤信會安排更優渥勞動條件的工作機會，以賺取更多的金錢誘因之下，因而容易出現逃逸狀況；勞動部統計，2017年在台行蹤不明的逃逸外勞達到 5.2萬人，外勞逃逸後，可能排擠本國勞動人口就業、傷害國內治安，造成台灣社會的隱憂。
至我國開放引進外勞迄今已逾十年，基層勞工短缺的問題已獲得解決，並且帶來實質的經濟效益，但也延伸了許多可以研究與探討的議題。本研究將採用質性的文獻探討法為主，佐以訪談與個案分析的方式，系統性回顧自台灣引進外勞後，於經濟、文化、社會各方面的效益與問題解析，並提供改善措施與建議事項，讓外勞與本國國民雙方衝突越少、瞭解越多。

The Employment Service Act. was promulgated and came into full force in Taiwan on 8th May, 1992, which approved the legal entry of foreign workers. By August 2017, the total population of foreign workforce is 663,234 which has relieved pressure on labor shortage. With the growth foreign labor force, the increasing impacts on economic, culture, society, and etc. become more severe.
By August 2017, the unemployment rate in Taiwan was 3.89% (approx. 461,000 people). Companies take policy of hiring foreign workers with lower salary as solution to labor shortage, and the policy affects the employment opportunities of national population.
The legal entry of foreign workers had been approved for decades in Taiwan, which solved the labor shortage and also contributed economic benefits; however, several researches topics and relevant issues, which can be developed for further study, are derived from increasing population of foreign labor force. The research aims to conduct a systematical review on benefits and problem analysis in economic, cultural, and social fields led by the approval of foreign labor force since 1992, and provide improvement measures and suggestions.

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