Real Wage in an Inflationary Environment

In an economy experiencing an inflationary spiral where unemployment is consistently low, both nominal wages and the general price level are rising. According to the price-setting (PS) model, why does the real wage remain stable under these conditions?

In an economy experiencing an inflationary spiral due to consistently low unemployment, the purchasing power of workers' wages steadily increases because nominal wages are rising faster than the price level.

Real Wage Calculation in an Inflationary Spiral