He worked at the firm of Tillman, Bradley & Morrow and served as the president of the Sloss-Sheffield Steel and Iron Company.

[1][2] Morrow began the practice of law in Birmingham in 1894 and served as assistant solicitor from 1896 to 1899.

This firm was for many years among the most prominent in the American South, with clients including the Louisville and Nashville Railroad, the Seaboard Air Line Railroad, and the Atlanta, Birmingham, and Atlantic Railway.

[1][5] As a legislator, Morrow sponsored a bill (passed into law) that made it less likely for mine owners to be found liable for industrial accidents.

[7][8] He supported the gubernatorial campaign of John Malcolm Patterson,[7] who was endorsed by the Ku Klux Klan for his opposition to civil rights measures.

They had six children: Katherine Molton, Mamie Corrilla, Margaret Smith, Annie Louise, Hugh Jr., and Libby Elizabeth.