Check out this link right here at 911Dispatch -
http://www.911dispatch.com/info/ergonomics/index.htmlSome of the links on this page are a little old and may not work. The OSHA guidelines may be your best way to argue for ergonomic consoles. Also look into getting grants for the consoles.
If you do get consoles in the future, let me offer a tip about installing them. Make sure that when you install all the computers, monitors, etc that you do it with the console raised to it's highest position. This way, all of the cables will be long enough to raise them. After ours where installed, there were some consoles that could not be raised all of the way because the cabling was too short. That defeated the purpose of spending money on the ergonomic consoles.