<sigh> If that was only accurate.
Well, in a way it is...for a city job, you have city inspectors watching all the time, for a state job, you have state inspectors and possibly even federal inspectors...but most of the rest of that is just bullshit.
I worked union construction for about 30 years. EVERY job I was on with the exception of one...the steward worked right along side of the other members of the crew. On the single exception, it was a big job, scattered over 2 counties, and the steward stayed busy keeping union bargaining issues straightened out. The hands were from all over the country, were used to union agreements in many states...and always had...issues.
The business agent MIGHT stop by to see if he was needed...but rarely was there any longer than necessary. Doing so might construe interference with the company's business...we were not babysitters.
I didn't work many paving jobs...hated the stink of asphalt...but situations like the one in the picture were very rare...and, as is shown in the picture, the "unnecessary personnel" were usually city, county, state, and/or federal inspectors...and that has nothing to do with the company or it's workers...I spent much of my career building and repairing bridges. We were always awash in fucking inspectors...many of whom had engineering degrees...but knew absolutely NOTHING about the work they were watching.
Some of the contractors I worked for were...slippery.
The inspectors were, IMO, a good thing, because they helped keep the contractor from cutting corners that could cause shoddy work.
Unfortunately, all too often, the inspectors are on the take...so they sign off on shoddy work. I think that's particularly prevalent on the east coast where the "mob" has stronger union ties...as is the practice of "padding payroll" with people who don't actually work...they just get paid.