Maybe, if you're lucky, you have a job that allows you to work flexible hours or even from home, and you can sleep late when you're feeling tired. Or maybe you have a job that affords you the opportunity to nap at work.

But in many of the most stressful jobs, it's not uncommon to stay up late putting in extra hours and wake up early to do it all over again, trapped in a vicious cycle of sleep deprivation and over-caffeination. To highlight those fields where workers are the most tired, mattress company Sleepy's analyzed a set of data from the CDC's National Health Interview Survey (NHIS), and ranked occupations based on whether or not workers were getting enough shut-eye. (The average adult needs seven to nine hours a night, according to the National Sleep Foundation.)

Some of the worst offenders are occupations you might expect to see on a list like this. We know, for instance, that shift workers (like night nurses or paramedics) are at risk for sleep problems (not to mention heart disease and diabetes). And a 2011 study suggested that some 40 percent of police officers have a sleep disorder -- causing many to fall asleep on the job.

The jobs on the well-rested side of the spectrum may be less stressful, according to a Sleepy's press release, and also often involve daylight-only schedules in some instances (think construction or forestry), which limits late-night hours.

Click through the slideshow below to see the full rankings, from the most well-rested to the most sleep-deprived jobs, and tell us in the comments below if your job made the list.

For more on sleep, click here.