The aims of this study is to investigate the moderating effect of hope in the relationship between the future-time perspective and subjective well-being for baby boomers. For this purpose, a survey was performed on baby boomers (1955–1963) in D city by face to face and a total of 380 questionnaires were used for analysis. Data analysis was conducted using SPSS 19.0 and PROCESS macro 3.3 statistical program to analyze descriptive statistics, correlation analysis between each variable, and regression analysis to find out the moderating effect of hope. The main results of this study are as follows: First, the future-time perspective has a significant effect on subjective well-being. Second, the moderating effect of hope was statistically significant in the relationship between future-time perspective and subjective well-being. These results indicated that the subjective well-being can be enhanced by expanding the future-time perspective of baby boomers, and subjective well-being can be enhanced if hope is utilized in various routes even if the level of future time perspective expansion is low. Based on this integrated path confirmation, various methods were sought to enhance the subjective well-being of baby boomers.