The University of Virginia has adopted a voluntary open access policy.
Here's an excerpt from "Faculty Senate Approves Open Access, Authors' Rights Resolution":
The Open Access policy was a revision of a resolution on scholarly publications that was brought to the Faculty Senate last November, Task Force Chair Brian Pusser said. Originally, the resolution said participation would be mandatory by default but that faculty members could sign a waiver to opt out of it. The policy then was revised so that faculty members simply could decide if they wanted to contribute to the repository, Pusser said.
For background see: Faculty Senate Task Force on Scholarly Publications and Authors' Rights and "U.Va. Faculty Senate Weighs Access to Scholarly Articles."
