Labor Day just got more interesting.

We’ve already noted that Vice President Joe Biden is coming to Pittsburgh on Monday to participate in the holiday festivities.

Now, he’ll be joined by the head of the most powerful union in the country, Richard Trumka of the AFL-CIO.

According to Annie Linskey of the Boston Globe, Trumka and Biden will be walking together.

“I’m going to Pittsburgh and he’s going to Pittsburgh and I’m going to walk with the vice president of the United States,” Trumka said. “People can read into that, or out of that, what they want. I told you he is a good friend and a great champion of the working people. And he hasn’t announced anything yet.”

By “he hasn’t announced anything yet”, Trumka of course means the 2016 presidential election.

Biden has been contemplating a run and an appearance with the President of the AFL-CIO won’t exactly thrill Hillary Clinton or her campaign.

Trumka also contended that Clinton has yet to fire up organized labor.

“She really has to figure out a way to energize workers,” he stated.

He also endorsed efforts by other Democratic candidates to include more than six debates for the upcoming primary.

“I like to have the debate,” he explained. “I like to have things open.”