Regardless if someone works in an office or not, the point was they should not have to work on their own time; of course, exceptions exist and this changes for those who have their own businesses. That said, certainly agree that not everyone is made for management and there's a need to ensure manual trades do not get lost.
If an employer forces an employee to work on their own time, every state has a department for dealing with it and it's illegal for an employer to go after a whistle blower.
Who is forced to work on their own time?
I look at the loss of trade skills as carelessness. The people who determine what is taught at schools likely don't have any understanding of the job market, the skills or anything associated with them unless by coincidence, when they need to hire someone for some kind of work.
My friends have a daughter in law who is a teacher in AZ- she was telling us about the Phoenix and AZ school systems not having a way to advance students to a higher grade when they already know the material. Didn't even have a way to test them or an Advanced Placement system. Her principal had her write a proposal that would be sent to the state superintendent to explain that she had students who were completely bored and fortunately, these kids were able to verbalize the reasons for their boredom, rather than saying "I don't know" or giving some other excuse. Her school got the funding to create the tests and they found that of a particular group of kids in that school, 60% qualified for AP.
I know people who don't know which end of a screwdriver to pound on. I went to a friends' place on a SE Wisconsin lake to help replace the prop on a pontoon boat Tuesday, where my friends with the daughter in law who's a teacher, her husband and their kids are staying- my friends' son used my tools and I advised on what needed to be done. Watching him use tools was disturbing, in a way. The people who own the boat and the house just pay people to do things and that guy & I have been friends since high school- he has almost no tools and would if he were to try to do anything major, I think someone might be hurt. While that's fine if someone can afford it, they're completely dependent on others. They had a company install their AV, network, lighting controls and surveillance cameras- I heard buzzing from the speakers in the 3rd floor ceiling, but I'm not sure they even notice. If the installers left it that way and didn't attempt to fix the problem, I see that as a symptom of the current problems in training and job performance.