Two former studies showed that kind of past work experiences influenced the quality of life after retirement. Mail questionnaire surveys were conducted in these studies and was answered by 898 retireers from four large private corporations. An open-ended question, asking for messages to the incumbent younger generations about their life-planning, was included in that questionnaire surveys. For the present study, KJ Method (KJM) was conducted to analize the messages which were received from 566 retireers. The results of analyses reinforced those of the former studies and proved that voluntary self-planning and company training of people about retirement while they were in office are of great effects on their lives after retirement.