University policies may be voluntary (i.e. they request that researchers make their work Open Access) or mandatory (i.e. they require that researchers make their work Open Access. The evidence shows that only mandatory policies produce the level of self-archiving from researchers that fill repositories.
Basic issues involved in wording an Open Access policy
Types of institutional Open Access policy wording
An optimal institutional Open Access policy
The University of Liege Open Access policy wording
Examples of policies developed by members of the EOS Board can be found in the Resources section of this website.