When you have almost 80% of the population living paycheck to paycheck [1] with practically nobody in that percentage with a significant savings [2], and workplace laws where you can be fired for literally anything, you can easily stifle workplace unionization efforts and discourse. People literally cannot afford to do anything that would benefit them.
This article is about Canada, but it's really becoming a worldwide issue.
[1] https://www.cnbc.com/2017/08/24/most-americans-live-paycheck...
[2] https://www.cnbc.com/2018/01/18/few-americans-have-enough-sa...