Sullivan concluded by requesting that PSLM members end the sit-in.
"If you choose not to leave Massachusetts Hall, I ask that you respect the people who work here," she wrote.
PSLM members sent an e-mail letter to first-years Sunday urging frustrated students to "air their grievances" with the students campaigning for a living wage.
The letter said that in response to complaints from Yard residents, PSLM members have decided to "scale back louder protests to afternoon hours and are generally trying to be more sensitive to noise levels."
--Staff writers Lauren R. Dorgan and Garrett M. Graff contributed to the reporting of this story.