On my Mom's side of the family, Granddad retired long before Grandmom. He retired at the age of 55, in 1971, to take care of an ailing aunt that they moved in with them. Aunt Helen, I think her name was. Well, she passed away within a year. Granddad decided not to go back to work, but he kept busy. He'd worked all his life as a farmer, growing up on a farm and then working at a local government farm/plant introduction station. He was also a mechanic/ammunition truck driver in the Marines, enlisting for a few years in 1940, but being held over after WWII broke out.
Their house is on 1 1/4 acres, and Granddad had plowed up most of the back yard and did gardening, and that kept him busy. He and his brother in law also did shadetree mechanic work to bring in a little extra money, and to have something to do...at least until cars started getting more complicated with computers, emissions controls, and such.
Granddad also did most of the cooking, and other stuff around the house. Whenever something needed repairing, rather than call a contractor, Granddad just did it himself if he could.
They seemed to get along just fine, with Grandmom still working. Grandmom was also able to get enough time off work that they could go on camping trips and such on a whim, it seemed. Eventually, Grandmom was forced to retire from the federal gov't when the hospital she was working at got closed down, after a tug-of-war between the feds and DC. DC won, and immediately shut it down, for whatever reason. That was 1980, and Grandmom was 56. Grandmom was too much of a workaholic though, so she went back to work, first doing transcription work for doctors and nurses she knew, working out of the home. Eventually, she got a part time/on call position at another hospital about 15 miles away, and sometimes they'd let her work almost full-time hours, and she enjoyed it. And, she could get away whenever she wanted, as long as she wanted. In the summer of 1982 for example, my Mom had to go to a 6-week workshop in Texas, so my grandparents decided to make a big vacation out of it. Ended up taking 8 weeks...we took our time, taking about two weeks to get to Texas, seeing relatives, friends, and sights along the way. Dropped Mom off, and then continued out to see Grandmom's brother and sister in law in Long Beach, CA. So, her schedule was VERY flexible!
Granddad passed away from cancer at the age of 73, in 1990. Grandmom kept working until 1994, when she finally turned 70. She had mixed emotions about it. On one hand, she figured that at the age of 70, it was time to retire. But, she hated it, having nothing to do, and never did adapt well to it.
During those 19 years though, from 1971-90, when Granddad was home and Grandmom was still working, they seemed happy though, and made it work.
On my Dad's side of the family, both grandparents retired at about the same time, in 1974. Granddad was 60, and had enough years in with the Pennsylvania Railroad to get a good retirement. Grandmom was 53, and had worked for several railroads, doing office work. For some reason, the name "Fruit Growers" comes to mind. I've heard that when a husband and wife retire and are suddenly together all of the time, with no break from each other, it can strain their relationship. But, they seemed to be very happy together.
Their retirement together lasted about 20 years...Grandmom got sick in late 1993 and passed away in June 1994. Granddad is still holding on, and if he makes it to October 24, will be 100! He used to joke about how he's been retired longer than he was working, although I think he just means working for the railroad, which was from around 1940-74. If you count his time in the Marines (he actually got out in 1939, so he missed WWII), and other jobs, I'd imagine his total work life is still a bit longer than his retirement. Still, his ~40 years of retirement is very impressive!