Discussing the recovery of the labor market in Europe, the European Central Bank (ECB) noted: Hourly wages

Question:

Discussing the recovery of the labor market in Europe, the European Central Bank (ECB) noted: “Hourly wages adjusted earlier and more sharply in the United States than in the euro area. Different labor market policies and a greater degree of wage flexibility . Played a role.”What did the ECB mean by “different labor market policies?”