According to article 2, section 04 of our contract:

The University will notify all new employees that... the Agreement is available on the graduate studies or comparable authority page of the University website...

Our contract is posted here.

The University has also posted copies of our contract:

http://www.umb.edu/administration_finance/hr/employment/hiring_grad_students.html

Hard copies are currently available in GEO's office. If you would like copies for your department, please contact your Steward.

A summary of our contract is available in the Benefits section.