2) Over Spending
If you do not receive a pension after retiring or if your pension is less than your regular paycheck was, it may be easy to accidently overspend, especially right after retiring. If you spend more money than you receive, you will quickly find your savings depleting. As such, many people return to work so that they can get enough money to live comfortably and to sustain their lifestyle financially. Since people are living longer in present day than in the past, the money they have saved for retirement has to stretch for many more years, and this can lead to a necessary downgrade in indulgence. Working for some extra years can help people build up more money, and will also put them in a position where they are spending more hours earning money and fewer hours spending it.