So William's doing 220 jobs a year.

So, lets say he has 6 weeks holiday a year. That gives him 46 weeks to carry out 220 jobs. If he works 5 days a week then he has 5 x 46 days in which to work = 230. So he's not even managing 1 job a day on average!

And don't forget that he can easily manage 3 or 4 jobs in one day eg a hospital in Sheffield, a Town Hall in Leeds, a School in Nottingham etc. So at a rate of 3 jobs a day, he's really only at work 73 days a year. So I would say he's slacking a bit, by at least 70% in comparison to the rest of the working population.

His granny is doing a bit better but given that she could cover at least 2 jobs a day, given her age, she still falls 27% short.

And remember, these jobs don't take a great deal of skill or knowledge. It's about the same level as a Corrie actor opening a supermarket; walking, chatting, smiling, waving and reading a pre-prepared speech. But the Corrie actors have to provide their own transport, clothing and food.