Social science explanations for rising inequality are incomplete in two significant ways. First, they commonly study income inequality through the narrow prism of earnings, overlooking key sources originating in the labor market, such as employee benefits and corporate profits. Second, and related to the first, research on rising inequality is still frequently conducted at the individual or national levels, neglecting workplaces, and in particular power relations at work. Conflicts arise and compromises are forged not primarily at the national level but within specific institutional settings, including the workplace. As a consequence of these two limitations, social science explanations of rising inequality neglect the complex fabric of workers' and employers' relative bargaining power, their multidimensionality and interdependence, and their resulting incomes.
In the DIWA research project, we formulate an original account of income inequality that is new in two ways.
First, we develop an innovative approach to measuring income inequality that bridges the gap between studies on earnings, benefits, and labor's share inequalities and situates inequality within the workplaces that produce it. By constructing what we refer to as "distributional workplace accounts" (DIWA), we integrate personal, workplace, and functional income distributions to measure the distribution of labor income (wages and employer-provided fringe benefits), capital income (income from property and from self-owned business, corporate profits), and pretax factor income among (1) income classes according to adult individuals' ranked income, (2) production classes according to adult individuals' workplace ownership and employment status, and (3) social groups according to adult individuals' ethnicity and gender.
Second, we develop a new conceptualization of relative bargaining power, emphasizing its institutional and structural sources, as well as its multifaceted connections to income inequality. We then analyze the effect of proxies for workers' and employers' relative bargaining power—derived from collective agreements, institutional data, and network data—on DIWA across three countries and over the medium run.