In the context of long run economic adjustment, it is true that a decrease in nominal wages will always lead to an increase in the short-run aggregate supply (SRAS) curve, facilitating a return to full employment without any external intervention.

In the long run, when nominal wages decrease, it means that workers are being paid less money for their labor. This reduction in wages lowers the overall cost for businesses to produce goods and services. As a result, businesses can afford to produce more, which shifts the short-run aggregate supply (SRAS) curve to the right, indicating an increase in supply. For example, if a factory pays its workers less, it can produce more toys at a lower cost, which helps the economy move back towards full employment. However, while this mechanism can help, it may not always happen without other factors at play, such as consumer demand or business confidence.