Stressor, Social Exchange Relationship, and Job Performance C. C. Hsu1*, H. A. Shih2 1 2 Department of International Business, Southern Taiwan University, Tainan, Taiwan Department of Business Administration, National Cheng Kung University, Tainan, Taiwan (hsucc@mail.stut.edu.tw) Abstract - This study examines the impact of challenge stressor and hindrance stressor on job performance and second, revealing the moderating effect of social exchange relationship toward former relationship. Based on the 213 samples from Taiwanese firms, our analysis shows that challenge stressor can promote job performance while hindrance reduces performance. In addition, this study found the relationship between hindrance and job performance is weaker when social exchange is high rather than low. Based on empirical results, this study also provides theoretical and practical implications. Keywords - challenge stressor, hindrance stressor, social exchange relationship