Why was President Truman's Executive OrderOder 9981 significant? Responses It helped to establish unions to ensure fairer treatment of employees. It helped to establish unions to ensure fairer treatment of employees. It avoided future warfare conflicts on foreign soil. It avoided future warfare conflicts on foreign soil. It was one of the first workplace diversity initiatives on record. It was one of the first workplace diversity initiatives on record. It was not significant as it did not outlaw segregation nationwide