Japan Post Holdings Co. is planning a massive investment to refurbish and reorganize its outlets and operations in its three-year management plan from fiscal 2014.

The company, however, has not been able to map out plans for entering the potentially lucrative markets for housing loans and lending to corporate borrowers because of its status as a government-owned entity.

The three-year program also lacks specifics about the holding company's approach to an initial public offering, which is to be the culmination of the whole enterprise of bringing the nationwide mail, banking and insurance operations under private ownership.