Reddit, can you identify this sci-fi short story?

I do not recall the title of the short story but it has remained a vivid image in my head for too many years without a name or reference. The story introduces the reader to a male character on a spaceship, which is described as a voyager to settle life on new planets. The character describes his role on the ship as a worker of some sort on a two shift interval. All the ship's inhabitants are split into two shifts therefore rooms are actually shared. The catch is that the two "roommates"...