StatGuy2000 said:
(1) What is the perception (or awareness) of physics PhDs among employers outside of finance, defence, or oil firms (the three areas that have been known to hire physics graduates)?
As far as astrophysics graduates go, if they haven't already hired a Ph.D., then you are a "space alien" and if you are a "space alien" then you aren't getting the job.
I would guess that software and technology firms will tend to have a favourable view of those with physics backgrounds (particularly those with either computational or experimental backgrounds).
No. The issue here is some theoretical physics Ph.D.'s can't program. When I'm applying for a job outside of the "big three", I minimize the fact that I have a physics Ph.D., and focus on my programming skills. In these sorts of jobs, the critical thing is not that they have a positive impression of Ph.D.'s, is that they don't have a *negative* one and that they consider my Ph.D. to be irrelevant.
Also, it may hurt you if their view is too positive. You can be overqualified, and sometimes you *are* overqualified. For example, if you are selling X, you often don't want people that are too smart or think too much. If they are too smart, then might have think deeply about whether X is a good product and they may have moral issues if they conclude that it isn't.
One thing that employers wonder about Ph.D.'s is if they will get bored with the work. That's not an illegitimate worry. This goes to the point that many of the reasons that employers have for not hiring Ph.D.'s are valid ones, and maybe they *shouldn't* hire a physics Ph.D.
(2) What has the various physics departments, along with the professional societies for physicists, in the US have actually done to promote physics PhDs in non-academic employment?
Pretty much nothing that I can see. One thing that the professional societies could do is to have non-academic Ph.D.s in policy making positions. Talk is cheap. The problem is that if you want to actually change things, you have to change power structures and that can be messy.
(3) As a follow-up to question (2), does there exist a contemptuous attitude among the professional physics societies in the US regarding non-academic employment?
A professional society isn't a human being, so it's hard for me to say what it means for an organization to have an attitude. I do know that there are individual physicists that have a strongly negative attitude toward non-academic employment. But sometimes that doesn't matter. If you have Professor X that thinks that anyone that doesn't get tenure is a failure, but if Professor Y thinks otherwise and Y is your dissertation adviser, it doesn't matter what X thinks.
Also people have complicated motivations. There is a part of my brain that keeps telling me that I'm a failure because I'm not a professor, and part of the reason I behave in the way that I do is to tell that part of my brain to shut up.
If part of me views myself with contempt and loathing, then I'm pretty sure that lots of other people do it. Part of the reason that I've found philosophy to be useful is that it's useful to figure out where that voice comes from and what to do about it.