The American Association of Suicidology has a great resource for finding a support group in your area. Access the link above or below and search their extensive database.
http://www.suicidology.org/displaycommon.cfm?an=1&subarticlenbr=55
People who lose colleagues and co-workers to suicide are sometimes forgotten in their grief. The impact of such a loss can be profound and significantly impact a workplace. People who lose family members to suicide often feel stigma and shame when they return from bereavement leave and attempt to pick up the pieces of their work life.