Due to the impact of the economic environment both at home and abroad, and the loosening of the labor laws, the business service industry in Japan has been relying on the atypical workforce to sustain its development. To maintain sound and stable labor relations, the principle of non-discrimination is crucial, along with a new pattern of employment that meets the needs of both employees and employers. Consequently, the study conducts a secondary analysis to examine the current situation of atypical employment in the Japanese business service industry, and cases of limited full-time employees in this industry. According to the aim of protecting labor, the study summarizes two main developmental principles of atypical employment in the Japanese business service industry that may serve as useful examples for Taiwan. These are Japan's promotion of "equal pay for equal work" that upgrades the rights of its atypical employees, and also Japan's introduction of the promotion and transfer system for limited full-time employees, which guarantees talent retention and employment stability.