Objective: The aim of this study is to investigate factors that affect job retention and reemployment in injured workers who returned to work and then analyze factors to maintain their job in job retention group. Methods: We used 4 years consecutive data from Panel Study of Worker’s Compensation Insurance. The data were collected from 2000 injured workers in termination of medical service from January to December 2012. The samples were divided into job retention group(n=695) and reemployment group(n=642) on primary data and confirmed the factors that affect the type of return-to-work. Additionally, we analyzed the factors influencing job maintenance in the job retention group, which divided into the successful group(n=418) and the failure group (n=152). Results: Job retention was shown more in subjects who maintained good relations with a company and worked for a long period, were a regular worker, were given any convenience from a company, worked in large company, and had less pain. Moreover, the factors affecting job maintenance were ranked employment period, level of education, and gender. Conclusion: This study shows that job retention can lead job maintenance more efficiently than reemployment. The main factor that affects job retention is workstation factor, and that affects job maintenance is the employment period. We also suggest that institutional strategy related to workstation factor should be needed to make injured workers maintain their job.