Fixation on a Co-Worker is the debut studio album by the American metalcore band Deadguy, released on November 20, 1995 through Victory Records. The album is now considered to have played an important role in the development of the metalcore fusion genre and was included in Decibel Magazine's "Hall of Fame" list in 2006. Terrorizer listed the album as one of the "100 Most Important Albums of the Nineties". It is the last recording by the group to feature vocalist Tim Singer and guitarist Keith Huckins.