according to the International accounting standards
is required in ordeer to determine the actuarial liability based on past service and expectd future salary.
Thus, the actuarially acceptable assumptions on salary scale are needed.
actuarial assumptions on other components of the benefit formulas are also required to measure the obligation such as
demographic factor and economic factors. All these assumptions are important because they are directly related to a possibility
of actuarial gains and losses. Moreover, the obligations are measured on a discounted basis because they may be settled many years
after the employees render the related service