After retiring as a player, Webster had been the
coach for a number of teams at various levels of hockey. His first head coaching job came in 1986, when he became coach of the
New York Rangers following
Ted Sator's firing. After only five games, Webster fell ill with what was later diagnosed as an inner-ear infection that left him unable to fly. He returned as head coach on January 5 for home games only; general manager
Phil Esposito split coaching duties with assistants
Eddie Giacomin and
Wayne Cashman for road games. He was cleared to fly again in January, but he suffered a relapse during a game against the
Edmonton Oilers, and was told to stay off planes for at least three months. Esposito named himself head coach for the remainder of the season. When it became apparent that Webster would not be able to return to the bench full-time the following season, he resigned on April 30, 1987. Webster's next head coaching stint was with the
Los Angeles Kings, from May 31, 1989, to May 4, 1992. He led the Kings to their first and only regular season division title in franchise history, in the 1990-91 season. While coaching the Kings in a game against
Detroit on November 16, 1991, Webster became upset at what he felt was a blown call by referee
Kerry Fraser. The Kings were assessed an extra penalty, and Webster took a stick and threw it on the ice, hitting one of Fraser's skates. Webster was suspended for 12 games. Webster also served as an amateur scout for the
Calgary Flames from 2003 to 2014. ==Honours==