"It is NOT voluntary Senior dmattox, all Electricians as employees of C-10's, who use tools, connececting 100va or more. MANDITORY!"

Can you show me somewhere in the law that shows its not voluntary? Not the DAS website, but the actual law.

Now it may be forced in without proper wording in the law, but as the law read it was voluntary, unless I misunderstand the word "may".