Also, dorm style housing next to a factory dramatically cut down on commute times which changes the work life balance equation. It's much like a 50 hour work week with a 1 hour commute which is fairly common in the US.
PS: IMO the US trucking industry is probably more expletive than most Chinese factory's. The hours are often comparable but the risk of death is much higher. And the industry often increases peoples risk of death for just a little more profit.
And that is why it is exploitation: They are in a position where they don't realistically have a choice, and hence don't realistically have power to negotiate higher salaries for more reasonable hours.
This is the basis for e.g. EU working time regulations that makes 60 hour work weeks illegal within the EU with few exceptions.
[0] http://www.dailymail.co.uk/news/article-2103798/Revealed-Ins...
Well, Apple doesn't pay them any salary at all—they're not Apple employees.