46 years. Astounding. Nintemdo's employee retention rate is absolutely incredible. I remember hearing on Warning A Huge Podcast, years ago (around 2010/2011) that a employee retention rate survey was done among Japanese videogame companies. Employee retention being measured in time, how long has the average employee worked there. Square Enix was the worst. Their employee retention rate was 18 months, meaning their workers burned out fast (this was entering into the titantic FF 13 Versus, FF 14 1.0 trials).
Nintendo's retention rate was the best in the survey. 20 years.
I remember reading an Iwata Asks about the Game & Watch. He interviewed three people who created the first games. They all joined Nintendo in the 1973-77 period and all three were still working there! It's amazing to think there is a significant, though shrinking pocket of workers at Nintendo who were there before Nintendo ever made a videogame.