We all think our jobs are stressful, but having a job on the extreme end of the spectrum can mean strict deadlines, brutal criticism, and even regularly having other people's lives in your hands.

To find out what the most stressful jobs in America are, we reached out to career information expert Laurence Shatkin, Ph.D., who compared the stress levels of the 747 occupations identified by the U.S. Department of Labor.

This list is ranked by the stress tolerance for each job, which measures how often employees face high-stress situations. It also includes the consequences of employee errors, which measures how serious it would be if mistakes were made, and the job's time pressure, which measures the strictness of deadlines. All factors are based on a scale from zero to 100 for prevalence in each job, where a higher rating signals high stress levels.

The stress factors are from the Occupational Information Network (O*NET).