some elder people in some modern country is still working in their retirement age for example Japan. Now, elder people in Japan still working even though they working in their own restaurant. Working on elder year be trusted can keep our longterm memories and increase mental illness such as dimentia. furthermore, working on elder time makes them happier because they can meet other people in society. imagibe that they just stay at their home or nurhing home without any social live except with thei family and friend, they must be stressed and trapped. the point is, people wherever old or young need makes some social live and activity or bustle on their live so that they has healthy life both mental or physycal. elder people are not prisioner which mean their activity not to be limited. Japanes people has much longer life one from many reason is they still working in their retirement age even though they just doing easy job and they are has good quality of life.