What is deeply ironic is that the 50+ find it hard to get jobs because companies - be they airlines, train companies or supermarkets - only want the young ones, (despite ageism being illegal in the UK). This applies to the highly qualified 50+ too. Even volunteering for the lifeboats is not possible after 55, no matter how fit, slim, healthy and active one is.
Yet the 50+ and 60+ remember the days of good manners and good service, and did not have smart phones when they were young, so they would be ideal for customer facing roles, and would be polite, attentive, and able to solve problems based on their life and career experience. One reason I prefer to shop in places such as M&S and John Lewis is that you get more intelligent and diligent shop assistants, who will take the time to help you and find solutions. Or rather you used to. Sadly, even those companies are going down market in their staff selection.
The 60+ would be good answering telephones in call centres I would have thought, as long as they were up to speed operating the computer systems.
Now that the retirement age is increasing, the country needs to do something to provide employment for the 60+. The younger folk can do the jobs where physical strength and stamina are needed, the older folk could do the gentler stuff that requires brain power.