For example, if a tech union offered networking opportunities, resume-building help, internships, and access to companies looking for employees, I would join.
Typically engineers for example will join something like IEEE, ASME, or AIChE.
The reason for this difference is that in the case of well paid, in demand professions like engineering, it is typically a better strategy to just have enough money stored to to bridge the gap and move on to another job quickly if your employer is shitty.
Laborers don't typically have those privileges, so they form organizations that help them defend their current jobs.
And I would add, banning employers that use anti-labor tactics... Bring in "Scabs" ? Lose access to the best people until restitution is made.
Edit: I also think incentives can be better aligned by bringing more equity or corporate performance pay eg: you get $20 an hour base pay, but $15 an hour is actually in company stock or bonuses on profit etc.
IIRC westjet (canadian airline) had a lot of success making every single employee have equity pay ("be an owner/shareholder") ...
If you look at /r/antiwork you’ll realize that these demands are more and more moving goalposts. I don’t understand that subreddit. They think jobs grow on trees.