Unit Labor Cost (ULC) measures the average cost of labor per unit of total output produced. When wage growth outstrips labor productivity gains, ULC expands:
As long as productivity rises in tandem with negotiated wages, cost push pressure on final consumer prices remains negligible.
A critical post-pandemic structural feature of the Eurozone is the margin buffer. When firms absorb elevated wage costs via lower unit profits rather than passing them forward to retail prices, second-round inflation is severed.
Olli Rehn and ECB staff projections emphasize this profit compression mechanism as the anchor for headline disinflation.
Second-round effects occur when temporary supply shocks or catch-up wage bargaining become entrenched in long-term inflation expectations, triggering reciprocal rounds of markup and wage hikes.
An index < 0.35 denotes stable absorption; > 0.65 signals severe wage-price spiral contagion requiring tight monetary policy.