I remember some of this crap from back in the 80s.
My father rarely had to work overtime, but there were occasions, such as a plant shutdown, when he absolutely had to work.
If they're shutting down the entire place so some necessary work could be done, they wanted workers there 24/7 for that week or two because they weren't making money during the shutdown and wanted to get things back up and running again as soon as possible.
Thankfully my dad was a team player and would help out when absolutely necessary.
He did turn down some voluntary overtime though.
That was when there were 2 midweek meetings. Now, when there is only one, it sounds really petty for the elders to have an issue with missing one hour (or however long the meeting is now) a week to keep decent employment.