In this study, I predicted that perceived team characteristics such as team efficacy and perceived team politics would play a role in increasing positive psychological capital (PPC) of employees. While perceived team politics could be included in job demands, team efficacy could be included in job resources. Therefore, I anticipated that team efficacy would positively affect PPS, while perceived team politics would negatively affect PPS. Additionally, I expected that PPS would increase organizational citizenship behaviors (OCB), while it would decrease deviant behaviors. Especially, I predicted that PPS of employees would play a role of mediator in the relationships between team efficacy and perceived team politics and two outcomes. Three hundred forty eight employees in two companies participated in the study. The results showed that team efficacy was positively related to PPS, while perceived team politics didn’t significantly affect PPS. While PPS was positively related to OCB, it was negatively related deviant behavior. Moreover, PPS fully mediated the relationships between PPS and the two outcomes.