Identifying inflation's grease and sand effects in the labor market

Erica L. Groshen

"Inflation has been accused of causing distortionary prices and wage fluctuations (sand) as well as lauded for facilitating adjustments to shocks when wages are rigid downwards (grease). This paper investigates whether these two effects can be distinguished from each other in a labor market by the following identification strategy: inflation-induced deviations among employer's mean wage-changes represent unintended intramarket distortions (sand), while inflation-induced, inter-occupational wage-changes reflect intended alignments with intermarket forces (grease). Using a unique 40-year panel of wage changes made by large mid-western employers, we find a wide variety of evidence to support the identification strategy. We also find some indications that occupational wages in large firms gained flexibility in the past four years. These results strongly support other findings that...