Pros
Pay rate, sorry but I see no other reasons especially due to the corporate philosophy of your not a good employee if you do not aspire to be in management. Those that want the management job more than likely shouldn't have it and many of those who don't want it should have it.
Cons
Many Cat employees and AmerIcan citizens were layed off (and still being) while Visa people were kept. Bad enough they have outsourced most entry level jobs, but like so many other places they are also bringing them here. For the most part because of the pay rates the Visa people get. I've seen Masters at $15 and less / hr. Most of them start as contractor temps, spend a number of years then get hired. I've known of Managers stating (about temps) that he wouldn't hire someone (that had 10+ yrs) because they were hired to be fired. How can a temp job last 10 yrs (and still be there)?