The majority of Americans - about 85 per cent - are neither rich nor poor. They belong to the economic category called "middle class". They usually buy insurance (they pay a sum of money each month) and there are many kinds of it. Other benefits for working people are provided by the companies they work for. There are also many government programs (federal or state) which help people in need. Social security program is the largest and is financed by a tax paid by all working people.