This study comparing retirement patterns over the past 30 years finds that older adults are now working longer and taking more complex routes out of the labor force. More than 40 percent of men born 1943 to 1947 did not retire by age 65, compared with only 20 percent of those born 1933 to 1937. Men and women born 1933 to 1937 were much more likely than those born 20 years earlier to move to part-time work at older ages and return to work after retiring instead of following the traditional route of retiring only once directly from full-time employment.