already said--illegal immigrants.
it's not like those jobs afford much security anyway--what's stopping any old joe from getting a job as a mover? nothing. construction at least requires some kind of trade skill, but even those are easily acquired (my friend just got a job building log cabins for rich bastards--and he's never built homes before.) sure, he makes good money (25dlrs an hr with no prior experience), but the work busts his ass and probably shortens his lifespan.
1. illegal immigrants are not outsourcing.
2. nobody ever said they were good jobs.
3. the minute you get hurt you're just out of luck.
4. women need not apply.