Several amendments to the Social Security Act were made in the 1950's, creating millions of additional people who would have a reliable source of income in their old age. In 1950, domestic workers; farm workers; non-farm, non-professional self-employed persons; and federal civilian employees not in the federal retirement system were brought into Social Security. In 1951, railroad workers with less than 10 years of service were added. In 1954, homeworkers and all self-employed persons except lawyers and medical professionals became eligible. In 1956, members of the military and all remaining self-employed persons except doctors joined.