On July 2005, Taiwan labor pension scheme had an important reform. Replacing the Defined Benefit Plan, the new reform adopts the Defined Contribution Plan. However, after adopting the new scheme for one and a half years under the management of the Council of Labor Affairs, the return on the labor pension is only 1.6%. In the foreseeable future, it seems that the authority intends to follow the existing system in which the majority part of the pension will be managed by the authority and the rest will be outsourced to third parties. According to the research from the Council of Labor Affairs, over the past years, the yield on pension fund is less than satisfactory. This research focuses on the comparison between two different investing mechanisms on the management of pension fund: one is to allow labors to decide which mutual funds they prefer to invest, and the other is to follow the traditional investment defined by the Authority. This research adopts a simulation approach which allows labors to choose their preferred mutual fund based on different pre-defined criteria. The results suggest that the pension fund managed by the labors themselves yields higher return than that of by the authority.