A week or two of intensive study and updating on modern technology and, ys, I could do my job. I am an economist who specialised in business information, making sure senior managers had all the business information they needed from market research to knowing when the top people in a company were sacked as the senior manager was on a flight to India to meet them.
I did return to work for six months 8 or 9 years after I retired. I worked as a volunteer with a charity for the aged in their information department and when the manager went on maternity leave, I went back to paid work as her maternity cover.
DH, now 81, has never stopped working. He is a chartered engineer specialising in the installation of offshore windfarms, and while he no longer does field work or travels for business, about once a month he still has Zoom meetings with one company to talk through any problems they are having with installations.