Past researchers have found job characteristics on in role job performance and scholars recently argued that the job performance have other extra role that should be expanded to organizational citizenship behavior. This study extended previous research that job characteristics will affect employees' behavior to get organizational goal that is workplace friendships. This paper is conducted by convenience sampling with 500 samples in total, and the respondents are all full-time employees in Taiwan and China. According to the findings of this study, job characteristics have a significant effect on workplace friendships. Additionally, this study proved the relationship between job characteristics and workplace friendships in Taiwan are stronger than those in China.