Working Paper: NBER ID: w28747
Authors: Lee E. Ohanian; Musa Orak; Shihan Shen
Abstract: This paper revisits capital-skill complementarity and inequality, as in Krusell, Ohanian, Rios-Rull and Violante (KORV, 2000). Using their methodology, we study how well the KORV model accounts for more recent data, including the large changes in labor’s share of income that were not present in KORV. We study both labor share of gross income (as in KORV), and income net of depreciation. We also use non-farm business sector output as an alternative measure of production to real GDP. We find strong evidence for continued capital-skill complementarity in the most recent data, and that the model continues to closely account for the skill premium. The model captures the average level of labor share, though it overpredicts its level by 2-4 percentage points at the end of the period.
Keywords: capital-skill complementarity; inequality; labor share; skill premium
JEL Codes: E13; E25; J23; J3; J68
Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.
| Cause | Effect |
|---|---|
| Technological advancements (O33) | Labor's share of income (E25) |
| Technological advancements (O33) | Skill premium (J24) |
| Technological advancements (O33) | Decline in gross labor share (E25) |
| Skill premium (J24) | Labor's share of income (E25) |
| Technological advancements (O33) | Compositional shift towards rapidly depreciating equipment (D25) |