Labor's Share and "Wage Parity"

Abstract

M UCH attention has been devoted in recent decades to the statistical evidence relating to share in the national income of the United States. It is generally agreed that this evidence, though inadequate for the earlier years, clearly establishes that the share of wages and salaries in United States national income has been significantly higher since World War I than in the nineteenth century. Some economists have concluded that the share of wages and salaries continues to be characterized by an upward trend. In some studies this upward trend is viewed as evidence that labor unions have succeeded in obtaining a larger share of the pie for their members. Others have concluded that wages and salaries have tended to constitute a stable proportion of national income in recent decades, after allowing for cyclical fluctuations. The significance of the results obtained in such studies cannot be determined without consideration of the changing structure of the economy. The growth of corporate organizations and the displacement of individual proprietorships and partnerships have entailed the conversion of large numbers of self-employed persons to wage and salary workers; not only has the proportion of employees in the labor force been raised, but also many of those added to this category have been relatively highsalaried corporate officers, managers, research and similar personnel.' This process is a continuing one. In addition, the growth of public institutions at a more rapid pace than the private sector of the economy has had an important influence on the share of employee compensation in national income.Furthermore, a considerable part of the wage and salary payments made by government has gone in the last two decades to persons outside the civilian labor force, i.e., to military personnel. These and other changes in the structure of the economy call into question the contention that labor's share of national income is best measured . . . by the ratio of Employee Compensation to National Income, 3 as well as many of the conclusions that have been reached by studying these ratios. The main purpose of the present study is to take account of some of the more important changes in the structure of the American economy, as they bear upon the share of employee compensation, by comparing this share with the percentage of employees in the labor force.4 To