This can be done through an expansionary monetary policy, which focuses on decreasing interest rates, Increasing exchange rates and Increasing money supply.
A decrease in interest rates creates a disincentive for consumers to save, which leads to consumers spending more on the economy contributing to the positive multiplier effect whereby C ^, leading to an increase in I^ for firms and leading to a higher government tax yield.
Since Labour is derived demand, an increase in Real GDP will allow for Unemployment to fall.