“The Role of Investment on Viability of Pension Funds” has been discussed by Mr . Ghasem Pourpak He presents a historical background of formation of the pension funds and evaluates its goal and mission from the view point of the workers, employers, labor unions, governments, and social institutions. He continues to review the financial structure of the pension funds in Iran and offers a set of strategies for achieving a balance between their cash inflows and outflows. Among his suggestions are 1. Increasing the rate of paycheck deductions, 2. Lengthening the period of tenure among the employees, 3. Accurate calculation of the income deductions for pension funds, 4. Establishing investment corporations which enjoy tax-exempt status, etc.