Do sticky wage norms systematically reduce real wages during inflation spikes?
Core argument: Firm-level modal wage rules peaked at 3.5% in 2022–2023 against roughly 7% inflation, meaning nominal rigidity systematically eroded real wages for job stayers throughout the inflationary episode.
Roughly 42% of all nominal wage increases below 6% were within 0.01 percentage points of a whole or half number [Figure 6]. Figure 9 plots the employment-weighted average modal wage change across firms (solid line) alongside inflation rate (dashed line) from 2016 through 2025. In the pre-pandemic period, firm-level wage rules were relatively stable at a median of 2.7%, modestly above the rate of inflation. Beginning in 2021, inflation rose sharply, peaking at approximately seven percent in 2022. The average modal wage change also rose, reaching a peak of 3.5% in 2022 and 2023. By 2025, the median firm had a wage rule granting increases of three percent, roughly in line with inflation. The stickiness of firms’ wage rules in the face of inflationary pressure contributed to the systematic fall in real wages for job stayers. Evidence from Belgium [which has strong wage indexation], suggests that declining real wages, rather than inflation itself, helps explain the persistence of depressed consumer sentiment during the 2021–2024 period.

