to open the same kind of possibility sooner or later.The competition between companies for high-level professionals ultimately defines additional hiring standards, which become incorporated into their wage scales and occupational structures and, by correspondence, to all of them, just by changing the pre-existing stratification.Consequently, companies already include pre-defined wage scales and occupational structures in their terms of employment, as well as some extra bargaining opportunities, outside of which there are limited chances of achieving improvements. Workers either adapt and accept these conditions or are forced to leave in search of other possibilities.From the outset, market competition establishes somewhat homogeneous hiring standards so as to minimize and limit as much as possible any special bargaining opportunities. Thus, at the end of the day, workers either accept what they are offered by the companies, or they are unable to find a better alternative in a levelled market, or they go provide services on their own in any cracks that are left to them.Given this, it is possible to admit with a high degree of certainty that the general and specific determinations of the income inequality profile lie within the labor market itself. The wage scales, from which monthly payments are made to workers, and occupational structures, from which workers tasks in their jobs are specified and stratified, establish and determine the variations of the pyramidal form to be taken by income distribution in society in its various sectors, regions and population densities.The range of wage scales and occupational structures encourages a characteristic rigidity of the final income stratification. From the most traditional to the most modern companies, from the smaller to the larger companies, all of them, given their technology and production, imprint their characteristic stratifications in the market.In the end, in societys income distribution picture, they will not appear as such, but they will be there, together, in the final computation, in the definitions of incomes of individuals and in the groups that receive the incomes of the resulting final scale.5- Operationalization of the tabular view of income distributionThe most simple and straightforward way to ascertain and understand income distribution is through its tabular presentation[21]. Only two columns, the first formed by ascending or descending sequential income frequencies and the second formed by absolute or relative frequencies corresponding to each one of the income intervals.This is the appearance of the income distribution shown in the two examples below. An initial view reveals whether the frequency pattern is more or less homogeneous throughout the income intervals, or more concentrated at the base of the table or more at the top. This already gives an idea, a priori, of the size of inequality in the distribution. The frequencies record how many individuals earn an income within each income interval.If the frequencies are more concentrated at the base, inequality is greater than if they were more concentrated at the top; between these two extremes, frequencies are scattered across income intervals without large accumulations in any of them. This allows comparing two tables, referring to two different situations in time, so that one can have an immediate