Joint Copyright Assignment
Note: the JCA was superseded by the Sun Contributor Agreement which was superseded by the Oracle Contributor Agreement.
The Joint Copyright Assignment is a legal document you sign giving Sun, as well as your self, copyright to your contributions to OpenOffice.org.
It lurks at http://www.openoffice.org/licenses/jca.pdf
There is more good blurb about this  here for those that want to know more.
For JCA already sent and still awaiting for approval, please see the Pending JCAs section to post your enquiry and follow up.