Tenure limits for commission members restrict reappointment and set eligibility for appointment and internal promotion. Rule prescribes that the Chairman, Vice Chairmen and Members hold office for five years or until age sixty two, whichever is earlier, and are not entitled to reappointment; a serving Vice Chairman or Member may be appointed as Chairman or Vice Chairman provided total service does not exceed the five year ceiling and the age limit is observed, and incumbents must serve at least two years before applying for or being appointed to any other post.