I have found a large group of overly-educated and under-experienced Gen Y'ers lately. Many students graduating with their Bachelor's degrees are realizing that it isn't enough to make the $s coming out that they want, so they are immediately going on to get their MBAs....with little/no experience. Universities are allowing it because it is increase their size/prestige of their MBA program. Those teaching in MBA programs sometimes do not have a real view of the business world anymore....and are looking at how these students progressed through the MBA program rather than what they are worth to the business world. They convince the students that they will come out making more than with a Bachelor's alone (even though they truly have no more experience, just a bit more book knowledge).
At the same times, these students are taking student loans (into 6 figures) to pay for much of this education/living expenses during that time. So when they come out, I am finding they DO need more money to live on because of the debt load they are currently carrying. I have one employee that is carrying $150K in student loan debt (with a graduate level degree) who is making 1/3 of that per year.
We had one whose graduate advisor told her to decline our job offer because it was too low for how high she was in her class. What's interesting is that she landed a job in another company that only paid about 5% more, but she wanted to negotiate about 20% more with us. I really do wonder when the last time the graduate advisor worked outside academia. This candidate also had a 6 figure student loan debt.
Personally, I think that personal debt leads to more preoccupation with pay than any other factor.