A salesperson largely influences company performance through a polite manner and sincerity. In addition, a salesperson builds relationships with customers and develops the relationships as contacting customers and interacting with them on behalf of his/her organization. Accordingly, further efforts for salespeople need to be necessary to manage their stress and emotions in an aspect of organization. In order to find a solution for the stress management of a salesperson, this study examines the process of how social support related to a salesperson affects a salesperson's feelings and behaviors. Specifically, this study investigates how social support affects person-job fit. In addition, this study examines whether the P-J fit that a salesperson perceives reduces emotional exhaustion. Lastly, this study sheds light on how emotional exhaustion affects adaptive behavior, which is a vocation aspect of a salesperson, To do so, we explore this phenomenon with a sample of 1,273 salespeople. Our findings suggest that, among social support, coworker's support and family support increase the P-J fit. Also, results indicate that the P-J fit reduces a salesperson's emotional exhaustion, which in turn negatively associates with adaptive behavior.