@revelette2,
I guess the point for most people is I've never heard Biden talking about "workers" and I've been following politics closely for most of my life.
Bernie has been walking in picket lines and supporting unions and workers his entire 50 year public career.
So, it does look like to me that Joe is taking a page out of Bernie's playbook.
Can you find an article written in the last 8 years of Joe's highly public tenure as Veep where he's touted union workers? If you can find one, I'll happily back off of my belief that he hasn't been a backer of unions until now. I haven't heard it, but that doesn't mean I'm right. I'd actually appreciate the new information.