Effect of experiencing volunteer activities on local government workers was investigated. A survey was conducted with local government workers in Azumino city that participated in volunteer activities at Shinshu-Azumino half marathon in 2014. Time-series data were collected from the volunteers (N=155) at two time points, before and after the experience of volunteering. Path analysis indicated a high level of motivation for volunteering after the experience, which promoted not only the intention to do the same volunteer activity again, but also the intention to do volunteer activities in general. A different path analysis indicated that fulfillment resulting from volunteering enhanced the willingness for coproduction with citizens in future administrative work. Moreover, the fulfillment from volunteering was positively influenced by a high level of attachment to the local community, which was one factor in the psychological sense of community. Willingness for coproduction with citizens before the experience of volunteering also enhanced the willingness for coproduction after the experience.