On the Optimal Labor Income Share

Jakub Growiec, Peter McAdam () and Jakub Mućk

No 2018-031, KAE Working Papers from Warsaw School of Economics, Collegium of Economic Analysis

Abstract: Labor's share of income has attracted interest in recent years reflecting its apparent decline. These falls, witnessed across many countries, are usually deemed undesirable. Any such assertion, however, begs the question of what is the socially optimal labor share. We address this question using a micro-founded endogenous growth model calibrated on US data. We find that in our central calibration the socially optimal labor share is 17% (11 pp) above the decentralized equilibrium, calibrated to match the average observed in history. We also study the dependence of both long-run growth equilibria on model parameters and relate our results to Piketty's ''laws of Capitalism''. Finally, we demonstrate that cyclical movements in factor income shares are socially optimal and that the decentralized equilibrium typically does not generate excess volatility.

Keywords: Labor income share; Endogenous growth; Factor augmenting; endogenous technical change; Social optimum; Decentralized allocation (search for similar items in EconPapers)
JEL-codes: O33 O41 (search for similar items in EconPapers)
Pages: 35 pages
Date: 2018-02
New Economics Papers: this item is included in nep-gro
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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http://hdl.handle.net/20.500.12182/1167 (application/pdf)

Related works:
Journal Article: On the Optimal Labor Income Share (2021)
Working Paper: On the optimal labor income share (2019)
Working Paper: On the optimal labor income share (2018)
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Persistent link: https://EconPapers.repec.org/RePEc:sgh:kaewps:2018031

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