I don't work at Amazon, but I have a friend who is on the vendor management side and whenever she talks about how stressful her job is and how terribly they treat people (not just their employees but also their vendors), she's on the verge of tears. I'm not exaggerating.
I didn't, but a coworker did when I wasn't in the office. Someone had just come out of a 1:1 with her manager and was sobbing at her desk, and no one was paying her any attention (this was an open plan office).