[3] In 1980, he was a member of the World Boxing Association's executive committee and a supervisor of WBA title fights.

[4][5] In 1981, Murray Sleep became vice president of the World Boxing Association and was appointed as vice-chairman for championship ratings of the WBA in 1987 until 1993.

He played a key role in securing Trevor Berbick a chance to compete for the Commonwealth title in Nassau in 1984.

[6] During his tenure as a supervisor, he oversaw fights involving Ray Mancini, Riddick Bowe, Julio Cesar Chavez, Thomas Hearns, and Roy Jones Jr.[7] In 1992, the WBA honored Sleep in a special ceremony in Nassau, Bahamas, as one of its longest-serving executive members.

[8][citation needed] Murray Sleep died on February 3, 2003, in Halifax, Nova Scotia, Canada.