In all honesty, though, their workplace policies aren't all that bad.
I've worked as an IT analyst for the CRA for a few years. I regularly had to interact with employees that manned the phones and made friends out of a few of them, all of whom eventually quit. Essentially, the workplace environment isn't all that bad (I'd even go as far as to say that it's relatively nice).
However, those who quit explained to me that they felt like they were slowly dying from the inside. See, their job is to call people owing the government money and essentially threatening them of legal action until they would pay up. Calling that one guy who owns a yacht and hasn't paid his taxes in 4 years feels okay, satisfying even. It's when they have to call a grandmother living alone in a small apartment, who breaks down in tears when they tell her the amount she owes that their job gets rather excruciating.