I used to be a company health and safety advisor and I was admittedly a bit of a bar steward with it as I can be when given authority, but with my eye for detail I cost my company loads, I wasn't popular, but none of my inspections ever failed and neither was anybody injured with anything covered by health and safety. This was a place where all manner of construction, garden and industry equipment was kept, serviced and repaired with fuel tanks, fuel, blades, belt driven equipment and lethal voltages, we had to be on the ball as even the racking where machines were stored carried it's own lethality.
But in that industry, I was a jack of all trades, H & S advisor, Lifting Equipment Inspector, fitter, driver, PAT tester, scaffold and elevator erector and shop salesman, the latter they soon discovered I was best out back in the workshop, but if pushed I could fill in. The point being everyone in the operation I worked in could do everyone else's job, it was a necessity, even the company owner 69 year old took his turn with some of the aspects when we were stuck, but look at what happens in construction now, how many people does it take to do a one person job, for sure anyone that can fix a pipe can dig a hole and using a camera isn't exactly hard, so what is this if it is not wasting time and money, the blody country has gone mad.