Like "Harrison Bergeron," this is a classic dystopian short story that's in the Prometheus Award (for Libertarian SF) Hall of Fame. And like HB, it's by an author who's not normally considered libertarian and would probably best be described as left-libertarian. But the core message -- the notion that the state might regulate time itself, to the extent that lateness is a crime and, in the extreme, a form of rebellion -- is one that works on a bunch of levels. This is a harder read than HB, but also a more rewarding one on a literary level (this also won the Hugo and Nebula awards).

Ellison had a reputation as possibly the most cantankerous man in SF -- he famously wrote about sending a dead gopher to a publisher's mailroom when they kept stalling and not paying him -- and I'll read anything he writes (including his two volumes of film criticism). Like Bradbury, he was mostly a short fiction writer, but anything of his you can track down (and a bunch is being reprinted) is worth grabbing. He was also a fun interview, and you can find a bunch of snippets of him on Youtube.