 He turned professional in March 1941 and joined the PGA Tour as a club professional, based at the Elmhurst Country Club in Elmhurst, Illinois, near Chicago, joining the Professional Golfers Association of America.Ferrier signed a golf equipment contract with Wilson Sporting Goods.With the United States declaring war on Japan, Nazi Germany, and Italy, in December 1941, following the Japanese attack on Pearl Harbor, Ferrier and his wife Norma worked in defense industry jobs in the Chicago area during World War II; this was part of conditions to become American citizens.