"And that’s when, after two more years studying civil servants, he discovered the biggest factor. It turns out if you have no control over your work, you are far more likely to become stressed – and, crucially, depressed."
I wonder how this research squares up with the so-called Executive Monkey experiment, which found that it was actually the monkey with more control that had more stress.[1]
[1] - https://en.wikipedia.org/wiki/Ulcers_in_Executive_Monkeys