Thank you very much.
It sounds like what you described is what is happening here.
Perhaps the stage employees who are in the union like this kid
and want him to be around; probably also because he is a good
kid, wants to learn the business, and does whatever they ask. Recognizing that as a practical matter he can't join the union now,
they have come up with this "idea" to keep him around.
My only last thought is that at some point management has to be
"in" on this. What if a member of management asks the union who
is doing what and/or who is this kid? Will - can - the union tell them
he is a "supervisor" when they see him lugging furniture? Also, there
has to be a "real" supervisor here somewhere?? Or is it
a situation where management sort of just "let's it go" for political
or other reasons (such as not wanting to upset a powerful union)?
As for the kid, which is what is important here, I would think that the
less said the better. In fact, I would think that if management
questions him about this he should probably just refer them to
one of the union workers on the job.