We looked at the working-life instability of the middle-aged, explored how it would affect their labor trajectories and income, and discussed potential support policies. The negative effects on the labor market trajectory and income due to job loss and unstable labor for people in their late-40s and early-50s, as observed in this study, highlight a significant societal issue. Involuntary unemployment from the career job leads to subsequent losses in employment trajectory and income confirms that reintegrating workers who have experienced involuntary early retirement into the labor market is a major task not only for the labor market but also for social policy.