There are multiple kinds of jobs, multiple kinds of bosses, and multiple reasons people are stressed on the job. In general, there is really only one reason to be stressed on the job: If a person has a legitimate reason to believe he/she may be fired suddenly with no other job prospects at hand, and with no other means of producing income available, it would be unnatural for that person not to be stressed. Otherwise, people are often stressed for no reason. Interestingly, two people can have the same job under the same exact circumstances and one will be stressed while the other is relaxed. Why this is so is explained further in this article.
Read the full article here: Stress on the Job