"Daysleeper" is a song by American alternative rock band R.E.M. It was released as the first single from their eleventh studio album Up on October 12, 1998. Sung from the point of view of a night shift worker corresponding with colleagues, "Daysleeper" focuses on the disorientation of time and circadian rhythm in such a lifestyle, leading to despair and loss of identity. Lead singer Michael Stipe developed the song's concept after noticing a sign reading "daysleeper" on a New York City apartment door.