After the war, Galvin served as United States Under Secretary of Labor and was a member of the Massachusetts Senate.

[1] He later graduated from the Northeastern University School of Law and spent sixteen years with Herrick, Smith, Donald, Farley and Ketchum.

[3] General George Marshall described Galvin as "the outstanding reservist in the war" before the United States Congress.

[1] On February 25, 1949, Galvin was nominated for the office of United States Under Secretary of Labor by president Harry S. Truman.

[4] In 1952 he led the United States delegation to a conference in Miami Beach, Florida, that discussed migratory labor agreements between the U.S. and Mexico.

[3] During the Eisenhower administration, Galvin was deputy coordinator of a team that campaigned for legislation in each state to authorize absentee voting for soldiers.