When I think of burnout though, I guess I'm thinking of doing above and beyond what your normal duties are for so long that you are just burnt out on it. Those jobs you mention absolutely are hard physical work, but the people that do them are generally in the physical shape to do that 40 hrs a week. And those are generally seasonal jobs in a large portion of the country, so they have larger blocks of time off. Again, I'm speaking in general terms. Of course there will be those who work all year, or who aren't in the best physical shape to do the job they do. But like I said, when I consider burn out, I don't think of your normal 40 hrs a week worth of work causing that for probably 90% of the jobs. And if the normal 40 hrs does cause you burnout, maybe you don't fit well with that job. Like working in a prison for instance (which I did for 15+ years) Not everyone has the personality to do that job. Not everyone can handle being cussed at and called names and threatened every day. It takes a certain type of personality to work in those types of places. And if you don't have that personality, it's going to be hard for you and that job just isn't a good fit for you. But for most of the people who do it and have the right personality for it, 40 hr/week isn't going to burn them out. Right now tho they are all working 60-80 hrs a week and a job that they used to love (or like at least) has them burned out bc of all the extra hours and lack of staff and extra work thats being put on them.