Morgan then worked for Fiat Automobiles. She moved to Los Angeles in 1978, and became the Irish Spring girl in various advertisements, while attending acting schools and workshops.

Morgan landed her first screen role in the 1980 comedy Caddyshack, playing the role of sexy bombshell Lacey Underall. In a 2012 interview, Morgan said of the role:

Morgan appeared in the 1982 hit Tron, the first computer-generated film. She played two characters: Lora, a computer programmer in the “real” world, and Yori, her alter-ego in the film’s computer-generated flights of imagination.

Morgan, whose father fought in World War II, is passionate about supporting the United States military and helping to alleviate the financial hardship felt by those who have been called to serve in the wars in Afghanistan and Iraq. She was director of the Caddyshack Reunion Golf Tournament in 2006, which reunited some of the cast of Caddyshack (Morgan included), along with other celebrities. Subtitled “Playing for the Home Team” and hosted at Willow Crest Golf Club in Oak Brook, Illinois, the tournament raised funds (and awareness) to benefit the Illinois Military Family Relief Fund, an organization that helps the families of National Guard members and reservists on active duty.

Morgan spent years in television and radio before becoming an actress. She presented the weather report at 6:00 p.m. and 10:00 p.m. in Rockford, Illinois, and weekends in Milwaukee. She was the morning drive DJ at the Chicago radio station WSDM, later “The Loop”. She ran camera and was an FCC-licensed radio-station engineer. In 2006, Morgan provided the voice of Emily S. Preston in the Night Traveler multimedia adventure series produced by Lunar Moth Entertainment. She also voiced Ma3a in Buena Vista Interactive’s PC game Tron 2.0 in 2003.

Morgan did not participate in the making of Tron: Legacy, the 2010 sequel to the 1982 film, nor does she appear in any of the retrospective materials produced in conjunction with the sequel for use in a DVD/Blu-ray reissue of the film in 2011. She did reunite with her costar Bruce Boxleitner in character as Lora, in a mock news conference on April 2, 2010, promoting the release of Tron Legacy.