The majority of it looks fine to me, but those arms are kind of not great.
I'd redraw them to either be more proportional, or to have a smoother more flowy shape to them.
Try to channel some cartoonistry here, if he's supposed to be a pugnacious working man it might be a good idea to give him bigger hands and thick, round arms.
Try taking inspiration from various animations if you go that route, one of my favorite burly big-man designs is the butler from Cats Don't Dance, seen here:
