These employer costs are subject to frequent updates, and can depend on a variety of employee variables. They are only a ballpark estimate, and the actual figure may be above or below the quoted amount based on a number of variables. These estimates represent a monthly average each year. In some cases, contribution maximums will lead to payments earlier in the year being larger, before being reduced once max is hit. If a 13th and 14th month are applicable, these have been pro-rated into the gross salaries.