high job mobility, project demand and personnel flow strategy.

1. Some industries or positions are highly mobile, and employees are easy to leave. In order to fill vacancies, companies need to recruit new employees frequently.

2. The company needs more human resources for new projects or large orders, and needs to recruit new employees to meet the needs of the projects.

3. The company adopts flexible employee management strategies, short-term contracts or temporary workers, which leads to the need to recruit new employees frequently.