Personally my approach was to build a vocal and open anti-corporate and anti-capitalist environment among my co-workers and then leave as soon as humanly possible.

I do agree that unionization ultimately betters conditions, but for some of these companies you’re going to be better suited just not engaging with them. No union deal is going to make the 60 minutes per hour 60 seconds per minute constant squeezing of labor by toxic business practices stop when that’s the corporate culture a company lands on.