Decides that the International Civil Service Commission, as a standing body, should keep under continual review the relationship between the levels of remuneration of the comparator civil service, at present the United States Civil Service, and the United Nations system, having due regard to all relevant factors, including the differences between the two services, and decides that at any time when the Commission considers corrective action is necessary it should either recommend such action to the General Assembly or, if urgent conservatory action is necessary between sessions of the Assembly to prevent an undue widening of the margin of United Nations remuneration over that of the comparator civil service, take appropriate measures itself within the operation of the post adjustment system;