They are making an investment of time, but say they shouldn't have to make an investment of money.

UF graduate students rallied on campus against the fees they have to pay to teach.

The protest was organized by Graduate Assistants United.

Organizers say fees for grad students who teach or perform research have increased 81 percent over the last six years, while their stipends have not.

Protesters said that doesn't sit right with them. Shouts of "No More Fees, No More Fees" were heard throughout the rally, which began at the Plaza of Americas.

UF officials say they are willing to work with the graduate students. While eliminating or capping fees may not be on the table, officials say they are willing to discuss increasing stipends.

During the latter part of the rally -- in which protesters marched to Tigert Hall -- a UF representative asked for the union to turn in a written proposal in time for the Board of Trustees meeting on December 1st.

GAU leaders said they will have their proposal ready by then.