Everyone seems to take it for granted that this a service.
The original question referred only to a 200 Amp Panel.
Here's a pic of a Cutler Hammer ground bar, properly installed in a 200 amp panel with no jumper.

[Linked Image]

I've got no objection to putting a jumper on of course, but I wouldn't have any objection to putting grounding bushings on every conduit in the building, either, as long as someone else was doing it. [Linked Image]