This article outlines the formation and development of Taiwan's labor law system. Around 1930, the ROC government on the Chinese mainland laid the foundation for contemporary labor laws, but these were not applied to Taiwan until the ROC government move to Taiwan in 1945, Taiwan was under the Japanese colonization for 50 years from 1985. Since the labor laws passed on the Chinese mainland did not meet the needs of Taiwan society, some necessary amendments and new laws were passed since 1945. The key labor law in Taiwan, the 1984 Labor Standards Law, not only protected the interests of workers, but also contributed to the study of labor law. The political and economic situation had changed dramatically following the end of martial law in 1987, and the reform of the labor law system became a priority. During the 1990s, more amendments and new laws brought major changes to the labor law system. The time for further reform has come.