ion of income between the rich and the middle class grew throughout the 1920's. While the disposable income rose 9% from 1920 to 1929, those with income within the top 1% enjoyed a stupendous 75% increase in per capita disposable income. A major reason for this large and growing gap between the rich and the working-class people was the increased manufacturing output throughout this period. From 1923-1929 the average output per worker increased 32% in manufacturing. During that same period of time average wages for manufacturing jobs increased only 8%. Thus wages increased at a rate one fourth as fast as productivity increased. As production costs fell quickly, wages rose slowly, and prices remained constant, the bulk benefit of the increased productivity went into corporate profits. In fact, from 1923-1929 corporate profits rose 62% and dividends rose 65%. The federal government also contributed to the growing gap between the rich and middle-class. Calvin Coolidge's administration favored business, and as a result the wealthy who invested in these businesses. An example of legislation to this purpose is the Revenue Act of 1926, signed by President Coolidge on February 26, 1926, which reduced federal income and inheritance taxes dramatically. Andrew Mellon, Coolidge's Secretary of the Treasury, was the main force behind these and other tax cuts throughout the 1920's. In effect, he was able to lower federal taxes such that a man with a million-dollar annual income had his federal taxes reduced from $600,000 to $200,000. Even the Supreme Court played a role in expanding the gap between the classes. In the 1923 case Adkins v. Children's Hospital, the Supreme Court ruled minimum-wage legislation unconstitutional. The large and growing disparity of wealth between the well-to-do and the middle-income citizens made the U.S. economy unstable. For an economy to function properly, total demand must equal total supply. In an economy with such dispa...
