Interestingly, on that 1–5 scale, there's not all that much separation between the most stressed (those middle management folks) and the temps and freelancers at the bottom of the heap; among 10 levels of workers, from owners down to juniors, administrative and support staff, the range varies from 3.28 down to 2.66 (the temps).

And the results are fairly similar for the number of days spent stressed each week, although owners switch places with middle management (who spend 3.45 days stressed); again, the temps and freelancers at the bottom spend 2.68 days per week stressed, on average.

Related: Identifying the stress seasons in a workforce

When it comes to specific types of stress, 81 percent of respondents say it's not being able to spend more time at home with the kids — the single biggest stressor. And you know that bit about American workers not taking their vacation time? Well, 79 percent report they'd rather save up for a big vacation than to go out — although when push comes to shove, workers in the U.S. on average use just 11 out of 15 days they're allotted, meaning four whole days that could be stress-free just go to waste.

One big workplace stressor isn't even really about the job — it's politics, with 62 percent saying they believe the new presidential administration will impact their work-life balance negatively. And 43 percent say they've already seen their stress levels go up because of the new administration.

Fifty-two percent stress over working overtime, while 47 percent are upset about working non-required weekends; and 31 percent say that their working overtime bothers their significant other or their family.

Much of the stress workers feel isn't caused by the job itself — just 16.1 percent say that complicated or hard work is the most stressful part — but by other factors: long or erratic hours (14.7 percent), lack of control (10.9 percent), lack of resources (10.8 percent), tough deadlines (10.6 percent) and too much work (10.3 percent) topped the list. But beware, bosses: you can be responsible for a major part of employees' stress levels, with 7.3 percent saying that a tough boss is the most stressful part of the job.

Related: Americans getting shamed for vacation

And those coping mechanisms? At the top of the list is watching TV (65.2 percent), followed by surfing the Internet (59.2 percent), getting into comfy clothes (53.6 percent) and having a meal (47.6 percent). Having a drink (alcoholic) is pretty popular, too, at 20.2 percent.

So if you're wondering what people who work a lot do when they finally go home, they're probably sitting on the couch in their PJs, eating pizza, having a beer and binge-watching Netflix.