This study aimed to examine the impact of attitude toward teams of employees of a company supporting a sports team on their attitude toward their respective companies. To this end, a causal relationship between multiple variables was predicted, and a hypothesis was proposed and tested using modeling. The attitude factors of employees of companies that support sports teams toward the team: “Sports attachment,” “Player attachment,” “Fan community identity,” and “Team identity,” were used as an independent variable, and “Organization identity,” “Organizational commitment,” which are attitude factors toward their companies, were used as dependent variables.The subjects of this study were the purchasers of tickets for home games of employees of companies that support volleyball teams. The survey method was a questionnaire survey using the indwelling method, and 452 questionnaires were used for analysis. In STUDY 1, sample A (n=226) was used to verify the reliability and validity of the measurement scale, and in STUDY 2, sample B (n=226) was used to verify the hypothetical model. In STUDY 1, the reliability and validity of the measurement scale were confirmed, and a certain degree of model fit was obtained using exploratory confirmatory factor analysis. In STUDY 2, the results of verifying the hypothesis using structural equation modeling showed that the “Fan community identity” of the attitude factor toward the team significantly affected “Organization identity,” (.473, p<.05) and “Organization commitment,” (.369, p<.05). Based on the results of this study, companies that support sports teams can improve their employees' attitudes toward the company by providing opportunities for them to watch and support the team's games, and by promoting their recognition of the team's "Fan community identity."