The Reserve Bank of Australia and the U.S. Federal Reserve have pursued dual mandates since post-war times, as has the Reserve Bank of New Zealand since a year ago. However, making monetary policy decisions that take labor markets into account does not require a dual mandate.
In fact, the effectiveness of monetary policy depends on a deep understanding by central banks of the mechanisms governing labor markets. After all, it has been proven that there is a close link between wage growth and inflation.