Does the longest-held occupation have any effects upon the income of elderly people?

The present paper investigates how the income of elderly people is influenced by the longest-held occupation one had engaged by analyzing the data collected from a nationwide survey. The results showed that there were groups of rather rich people whose annual income were higher than or equal to 3 million yen (approximately US$23,000) in every age bracket of the people who had engaged in professionals and large company white-collar workers as well as in some age brackets of small company white-collar workers, large company blue-collar workers, and self-employed white-collar workers. Those who had engaged in self-employed blue-collar workers and farmers in general had the lower income than those had engaged in other occupations had. The income of elderly people was strongly affected by occupational status he had engaged and by the age or when each people had engaged in the occupation. The result obtained by using MDPREF disclosed that those who had engaged in the professionals, large company white-collar workers, and large company blue-collar workers had the similar and high income. Those who had engaged in large company blue-collar workers and were between 60 to 64 yeas old had the especially high income. The income of those who had engaged in large company blue-collar workers was higher than that of those who had engaged in small company white-collar workers at all age brackets except for the age between 70 to 74 years old. These along with the result obtained by MDPREF suggest that former employees in large company had higher income than those in small company irrespective of blue or white-collar had.