Thanks. Again, some good info.

Gem: how do you suggest that a company verify that a person is qualified?

OSHA requires that qualified employees have the skills to determine nominal voltage and the skills to destinguish live parts from others. How is this typically verified?

And;

take the example of a maintenance worker. how can he/she demonstrate "qualified employee" competancies on all possible electrical systems in a facility?

Sorry to keep beating this, but its not quite dead yet (to me anyway)!