My experience was that I was responsible for the bulb matrix scoreboards, installed by the company I worked for in exchange for advertising revenue, during the renovation of Yankee Stadium completed in 1976. So we always wanted the thing to look as good as possible. The thing was a real light bulb eater, so usually 100 or more bulbs had to be replaced for each game. One fall afternoon in 1976, at 4PM I looked out at the scoreboard before a scheduled 8 PM playoff game, I saw our two sainted IBEW light bulb changers sitting in the bleachers shooting the breeze with the usual number of dead bulbs still to be changed. So I went out to the scoreboard and started changing the bulbs myself. What did I know? And I wasn't taking any bread out of any kid's mouth. The IBEW guys were still getting paid, but for BSing instead of changing light bulbs. The Union got very p!ssed. At 7 PM it still wasn't clear that THEY were going to ALLOW the game to be played. Working at the Stadium was a real dream. We weren't even allowed to run our own extension cords.
ML/NJ
I had a friend worked at the Bell Helicopter Textron plant in Amarillo years back. One Friday pm, a heli had to go out. He finished the part around 5:30. It was a small part, but he had to get the expediter to take it. Couldn’t find him (they were all on overtime). Finally found the union slug sitting in the break room with the other union slugs shooting the breeze. Had to wait till 9:30 for the guy to finish his break and pick up the part. Moved it about 100 feet to the waiting heli.