And since he "retired" early he'll have plenty of zeroes for income which will negatively affect his Social Security payout. Of course, it may not matter. He's been quite circumvent about the Bennett family finances for quite some time but it may be that Boo had to get a job in order for the family to survive. Or given that Rob is profoundly mentally ill maybe he gets SS disability payments. It's fairly certain his lack of investment savvy and the length of time he's been unemployed ensures that his next egg won't be enough to fund his family, assuming that nest egg still exists.