Mulligan's Tale for Older Workers Is Easily Explained by Shifts in Relative Demand

I'm glad to see that Casey Mulligan responded to my earlier post responding to his argument that the rise in employment among seniors indicates that the overall drop in overall employment is explained by supply factors, not demand factors.  I countered by pointing out that if this were true, then we would expect that there was decline in earnings for seniors relative to earnings for other workers. The data show the opposite, median weekly earnings for seniors actually rose somewhat more...