As people live longer there is bound to be a shift in the structure of the household. For example: working population is the biggest contributor to nation's development and family's economy. The longer the old population lives, the longer the working population will have to support them. When the working population gets older and cannot work anymore, their children, who are now in labor force, will have to support their parents and grand parents by working very hard. The existing Social Security and Medicare benefits may not prove to be sufficient for the older ones because in all likelihood the medical services become more costly for the older people as their requirements of medical attention become more. Well, to a great extent the improved medical services are one good reason for an increase in the average age of an individual. As a result, many households now a day consist of four generations. In many such cases the number of financially dependent family members far exceeds the working members. Out of these four generations, the third generation, who are the only ones in labor force, will have to support their parents, grand parents and their children. This phenomenon is certainly the result of increasing aging population with high life expectancy.
In order to aid the increasing older