Here Comes The Student Loan Bailout

"Pay as You Earn, by contrast, limits student-loan payments to 10% of "discretionary income" as defined by government formulas. Borrowers who make regular payments could have the remaining unpaid amounts forgiven after 20 years...

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In some cases, borrowers with low incomes could be required to make a zero-dollar payment and would still be considered current on their loan. Monthly payments can increase or decrease each year based on the borrower's income and family size.
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Borrowers with public-service jobs may qualify for loan forgiveness after just 10 years."