UL labels all have a serial number on them that needs to be accounted for in your paperwork. There are many types of labels - sections
signs, indoor, and outdoor, restored, etc. The labels are not really that expensive if you order them in bulk since its mostly a processing fee. You are also required to have a shop label with contact info and space to add electrical info for each
sign.
UL is not a government agency and copying their labels is not illegal but totally not cool for those of us who go through the process of being UL approved. Of course the fact that your thinking about working around the system says a lot about your company and work. You may also get your ars sued big time for it. We only have a few municipalities who really ask or require
signs be listed but most malls or property management companies want it - even if they don't understand why.
I personally think the whole thing is a joke but we play along so we can get the work we are after. I hear good things about MET and may be checking them out next renewal period.