Patrick H. Gannon, 57, a retired deputy director of information at the Department of Labor, died May 5 at Alexandria Hospital. He had had a stroke.

Mr. Gannon, who lived in Falls Church, was born in Spokane, Wash. He served in the Army in Europe in World War II, winning a battlefield commission, and in the Korean conflict. He graduated from the University of San Francisco.

Before moving to Washington in the early 1950s, he was a reporter for the San Francisco Examiner. He began work here for a news service and then became a magazine advertising representative for the National Association of Home Builders. He later moved to New York as art director for new building products at Look Magazine.

In 1964, Mr. Gannon returned here and joined Labor. In the late 1960s, he did a study of migrant worker conditions in California that helped bring about reforms in this area. After retiring in the mid-1970s, he helped run a family construction business in Virginia.

Survivors include his wife, Patricia, of Falls Church; three sons, Kieran, of Arlington, Gregory, of Richmond, and Thomas of Falls Church; a daughter, Kathleen, of Falls Church; his mother, Zelma N. Gannon, of Hollister, Calif.; two brothers, Thomas, of Hollister, and James, of Westchester, N.Y., and three grandchildren.