Economies of Scale and Division of Labor in Commercial Banking

TLDR

Adam Smith’s claim that division of labor generates scale economies has rarely been empirically tested, and most studies focus only on production‑function parameters or capital indivisibility. The study seeks to test Smith’s hypothesis by demonstrating that commercial banking, a labor‑intensive service sector, exhibits economies of scale, market‑determined output, and division of labor. The authors analyze commercial banking firms, applying tests for economies of scale and examining how local market size determines output and facilitates task specialization.

Abstract

While the classic statement by Adam Smith regarding the division of labor as a source of scale economies was made almost 200 years ago,' there have been few attempts to test this hypothesis empirically. That is, most studies of scale economies either stop after estimating the relevant parameters of the production function or concentrate on the indivisibility of capital equipment as an explanation of scale economies. To test Smith's hypothesis, one would have to have an industry in which economies of scale are present and the output of the firm is exogenously determined by the local market. That is, Smith's original limitation of the ability to subdivide tasks was the of the and we can assume that this is given, or exogenous, to the firm in his analysis. In this article, we will show that commercial banking, a labor intensive service industry, is a case in which economies of scale are present, output is determined by the extent of the local market, and division of labor occurs. First, we will describe the results of tests for economies of