Is there such thing as an "unstressful" job?

Unstressful job: Nothing to do or volunteer work..

I did not find any job which is unstressful.

I am not sure if there is an un-stressful job. There might be less stressful and more stressful jobs, but not jobs with no stress at all

I think Bank-Jobs and Teaching profession are comparatively unstressful than any other job.

There is no job which doesn't have stress. 

However it all depends of how we take things to mind.

If you determine how to handle to situation on a step by step process,nothing can be stressful.

Also stress is just for a while.

having pet knowledge and proper planning for best and worst case scenarios, leading and delegation.

Stress and Unstress or Mind Made, as long we associate in thinking between Expectation vs reality we can't avoid it.