We extend the model of Delfgaauw and Dur (2010) to analyze the occupation choice with the presence of the public service motivation. When the workers are purely altruistic, the lower is the acceptance rate of job application to the public sector, the higher is the possibility to have applicants with better managerial ability. In addition, when the friction cost of restarting job searching is higher, the applicants with less managerial ability tend to apply the private sector jobs from the beginning. On the other hand, when the workers are impurely altruistic, the applicants with less managerial ability will not self-select into the public sector. Finally, the highest social welfare level may not be reached if the acceptance rate in the public sector is not one hundred percent.