Business Communications Course One of the features of business economy in most developed countries in the world, since the Second World War, has been the increase in size of business units. This process has tended to accelerate in recent years, with the mergers & take-overs that have taken place in order to produce economies of scale & ability to compete on an international level. In consequence, managers & subordinates are having to spend an increasing proportion of their working time on communication, & skill in the exercise of this function is most necessary if they are to be effective.