Although in my mid-sixties, I am still working full time for an Electrical Engineering firm - although in a role best described as that of a "Busted @$$ Electrician".
In fact, during the last ten years, I have three times actually gone back "on the tools", but of late am mainly in the office. There have, though, been some lengthy visits to site (open-cut mining), with another one coming up next month. My involvement there was (and will be) with the high voltage switching activities.
Looking ahead, I can see myself remaining in the workforce for some considerable time yet to come. According to my employer, that is most likely going to involve a training role in High Voltage Switching and Isolations. To that end, I am presently studying towards attaining Certificate IV in Training and Assessments.