This book is interesting, but seems written to justify the authors bias and so is of doubtful usefulness in understanding the actual events.
For example he seems to blame working class people for not working hard enough, e.g. in the coal mines, during World War 2.
Working in a mine is bad enough normally, but to be forced to work there without proper equipment, without the normal level of ventilation or lighting (due to the shortage of copper), and with corners being cut for safety to boost productivity is even worse.
"It was well known to colliery managers that 'there is a tendency among certain men to take a few days rest on account of having sustained a a very minor accident'."
He completely elides that working in the coal mines was hellish during WW2 and that a significant number of miners were conscripts there against their will.
From elsewhere:
"Bevin Boys (the young draftees) were only issued with a compressed cardboard helmet and a pair of steel-toed boots, and were required to provide their own work clothes by using up their ration coupons.
Like many of the miners he worked with, Bevin Boy and artist David McClure’s flasks of cold tea quenched his thirst in the stifling heat of the mine. When that ran out, McClure quickly learned the miners’ trick of sucking a piece of clean coal to keep his mouth lubricated."
If you're so thirsty that you take to sucking on a piece of coal to sate your thirst, then yes, a 'minor' injury is probably a good cause for avoiding work for a few days.
For the author to completely skip these details provides an inaccurate depiction of the actual causes.
He later goes on to describe the NHS an expensive luxury, that couldn't be justified on cost, and that poor people just shouldn't have had access to healthcare.
Although he goes into detail where money is actually wasted, having a large part of his argument be based on conscripts not working hard enough, and poor people having access to basic healthcare, makes me doubt he should be allowed to influence any policy decisions.