Well, we can hardly celebrate Labor Day without the original man of labor--12 of them, to be precise--Hercules!!
The Prince of Power has just saved the planet Ciegrim-7, but the celebrations are interrupted when a certain herald of a certain planet-eater shows up...
But it turns out that Hercules and this particular herald are from the same backwater planet...
Well, one thing led to another, and...ahem...well, there was still a Comics Code back in those days, so let's just put it like this:
Oh, Hercules!!
Anyway, after Hercules beats Galactus with the power of laughter (and I mean that literally!), well...
Oh, Hercules...he labors for all of us, folks!!!
From Hercules: Prince Of Power #4 (1982)