In the world there is good stress and bad stress. Good stress would come into place when giving an important speech or right before getting married. Good stress is normal because it happens to everyone
Bad stress would be when you are in a situation that you cannot control such as deadlines not being met on the due date, working with others who you do not relate with, unemployment or finding work before your rent is due.

What is workplace stress?:

it is physically impossible to avoid stress. Stress itself is not the direct cause of things like
  • a decreased immune system
  • high blood pressure
  • Heart disease

...But it does not reduce the chances either, if anything, it nurtures it.