A large number of research studies in the stress literature over the previous 20 years have examined how organizational demands influence experienced stress; however, little research has examined how perceptions of organizational fit influence experienced stress and the stress process. In the present study, we use the conservation of resources (COR) theory to examine how perceptions of hindrance stressors, challenge stressors, and organizational fit (i.e., a resource) affect employees’ intrapersonal (i.e., job satisfaction and work intensity) and interpersonal (i.e., interpersonal workplace deviance and work-to-family conflict) outcomes through job strain (i.e., job tension) and motivational (i.e., vigor) cognitive stress processes. Results from three samples of data (n_{Sample 1} = 268, n_{Sample 2} = 259, n_{Sample 3} = 168) largely supported the hypothesized model and suggested that perceptions of organizational fit can be a resource associated with favorable effects on employees’ stress processes. Thus, we contribute to the stress and fit literatures by proposing and demonstrating empirical support for a COR theoretical explanation of why perceptions of organizational fit are a resource for employees. The results are important because they help provide a broader view of the effects of perceptions of organizational fit on employees’ stress processes than offered by prior research and suggest that organizational leaders have the opportunity to help employees manage workplace stress by fostering perceptions of organizational fit. Implications of results for theory and practice, strengths, limitations, and directions for future research are presented.