MPCs, MPEs and Multipliers: A Trilemma for New Keynesian Models
We show that New Keynesian models with frictionless labor supply face a challenge: given standard parameters, they cannot simultaneously match plausible estimates of marginal propensities to consume (MPCs), marginal propensities to earn (MPEs), and fiscal multipliers. A HANK model with sticky wages provides a solution to this trilemma.
Published Versions
Adrien Auclert & Bence Bardóczy & Matthew Rognlie, 2023. "MPCs, MPEs, and Multipliers: A Trilemma for New Keynesian Models," Review of Economics and Statistics, vol 105(3), pages 700-712. citation courtesy of 
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