Chas, I look forward to being a "geezer" as I am already at the ripe old age of 20.
I think "hard work" is a broad term and in today's world it can be applied to most jobs. I work as a cashier in a large supermarket, which sounds like an easy and lazy job but there is a lot of heavy lifting involved (boxesof bags and till rolls, 10kg potatoes, lines of trolleys etc - especially if you're a guy, it's expected).
Plus, with our store being the size that it is - after a couple of trips to the other side and back for prices etc, you could do with a 5 min break (we are attempting to arrange for roller skates or even better, electronic skooters for checkout lol). Not to mention cleaning, stocking shelves at the lanes and other random tasks as assigned by supervisors.
So, I think although my day may not be necessarily "hard" in many eyes, by the end of the day - I sure feel like I have earnt my minimum wage for the day.
For even more emphasis - recently we were open on Easter Saturday, the mall in which our store resides tallied 22,000 visitors to the centre (this is almost more than the population of the city we are in). It is estimated about 80-90% of those would have visited and passed through our store.
