I've worked for big corporate. I can confirm. It's basically modern day slavery. You are not a human being. You are a money generator, nothing more, nothing less.
The thing that always drives me crazy, CRAZY. Absolutely, bat shit ****ing crazy is when they scheduled me to work 10am - 3 am and then expect me to get home from work at 3:30 am and set my alarm clock for 8 am to go back there and after a 17 hour work day I want more than 4 hours of sleep and I want some ****ing time to relax before sleep. And they did that shit all of the ****ing time. There's nothing worse coming home from work all of the time that late at night and knowing as soon as you get home from a super long day, you don't have time to eat, or do anything, you just have to try and get as much sleep as you can, hopefully 2 or 3 hours at least.
I'm getting anxiety just writing this out right now, bringing back those memories.
I've only experienced this type of slavery here in Boston. Working in Kansas was never that bad.