Today is Labor Day, and there aren't too many unions in the world more powerful than the MLB Players Association. Big leaguers everywhere owe almost everything they have today to the late Marvin Miller, who was elected head of the MLBPA in 1966 and helped eliminate the reserve clause, implement free agency and all sorts of other important stuff. It's easy to forget that before Miller came along, players had to get offseason jobs because teams didn't pay them enough.
Here's a video of Miller and several others discussing the growth and importance of the players union:
Miller passed away last November at age 95 and was never elected to the Hall of Fame, which is unfathomable. He's one of the most important figures in baseball history. His work with the players and owners completely changed the game and helped get it to where it is today. If you built a baseball Mount Rushmore, Marvin Miller would be on it alongside Jackie Robinson, Babe Ruth and I guess Cy Young. He was that important.
Miller is eligible to be elected to the Hall of Fame posthumously by the Veterans Committee next year and every three years thereafter.